Inventor

Tadashi Nakamura

Inventor

Tokyo, JP

Overview

1976–2020

Patent span

Physics

Primary field (CPC G)

Patents· 265 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G11Bprimary

G11BInformation storage based on relative movement between record carrier and transducer8%

G02BOptical elements, systems or apparatus6%

G09GArrangements or circuits for control of indicating devices using static means to present variable information5%

Y10TTechnical subjects covered by former us classification5%

G06FElectric digital data processing5%

G03GElectrography5%

H05KPrinted circuits5%

H04NPictorial communication, e.g. television4%

G01SRadio direction-finding4%

B41JTypewriters4%

PatentTitleYear

10,853,145Information processing apparatus, method and non-transitory computer-readable storage medium2020 10,777,570Multi-tier three-dimensional memory devices containing annular dielectric spacers within memory openings and methods of making the same2020 10,600,802Multi-tier memory device with rounded top part of joint structure and methods of making the same2020 10,591,602Object detector and sensor2020 10,429,508Distance measuring device, moving system, and distance measurement method2019 10,409,192Optical scanner and image forming device incorporating same2019 10,398,006Object detection apparatus and moveable apparatus2019 10,371,817Object detecting apparatus2019 10,302,767Object detector and sensor2019 10,266,628Nitrile copolymer rubber composition2019 10,261,315Optical scanning apparatus and image display apparatus2019 10,242,994Three-dimensional memory device containing annular etch-stop spacer and method of making thereof2019 10,148,064Semiconductor laser driving apparatus, optical scanning apparatus, object detection apparatus, and mobile apparatus2018 10,115,730Three-dimensional memory device containing structurally reinforced pedestal channel portions and method of making thereof2018 10,031,212Object detection device and remote sensing apparatus2018 10,031,228Object detecting apparatus2018 9,999,994Method for producing product having uneven microstructure on surface thereof, mold release treatment method, and active energy ray curable resin composition for mold surface release treatment2018 9,991,280Multi-tier three-dimensional memory devices containing annular dielectric spacers within memory openings and methods of making the same2018 9,880,264'Projection optical system and object detection device'2018 9,864,164'Optical deflector, method for mirror finishing of mirror by cutting, and light detection and ranging device'2018 9,864,296'Optical scanner and image forming device incorporating same'2018 9,846,236Optical scanner, object detector, and sensing apparatus2017 9,817,123'Object detector and sensor'2017 9,804,385'Object detector and sensing apparatus'2017 9,780,034'Three-dimensional memory device containing annular etch-stop spacer and method of making thereof'2017 9,768,192'Three-dimensional memory device containing annular etch-stop spacer and method of making thereof'2017 9,568,358'Optical measurement device and vehicle'2017 9,568,605'Object detector and sensor'2017 9,530,198'Method for controlling X-ray image diagnosis apparatus and X-ray generation device'2016 9,494,857'Method for producing product having uneven microstructure on surface thereof'2016 9,384,547'X-ray image diagnostic apparatus and method for controlling X-ray generation device'2016 9,304,228'Object detection apparatus with detection based on reflected light or scattered light via an imaging unit'2016 9,285,266'Object detector including a light source with light emitting region of a first size in a first direction and a second size in a second direction'2016 9,229,225'Optical scanning device and image forming apparatus'2016 9,195,062'Optical scanning device and image forming apparatus'2015 9,188,674'Laser radar device'2015 9,097,898'Optical scanning apparatus and image forming apparatus including a multi-faceted mirror to deflect a light beam'2015 9,072,017'Wireless station, semiconductor device, wireless communication system, and a method for controlling the same'2015 9,052,444'Active energy ray-curable resin composition, and production method for products with surfaces of fine concave-convex structures'2015 8,928,716'Optical scanning device and image forming apparatus in which a plurality of scanning optical systems except one include a reflecting mirror'2015 8,910,700'Mold, method of manufacturing the same, article having fine uneven structure on surface, and method of manufacturing the same'2014 8,743,444'Optical scanning device, image forming apparatus, scanning lens, and molding method of the scanning lens'2014 8,654,172'Optical scanning device and image forming apparatus'2014 8,614,283'Resist polymer, resist composition, process for pattern formation, and starting compounds for production of the resist polymer'2013 8,593,701'Optical scanning device and image forming apparatus'2013 8,590,372'Device and method for measuring toner adhesion'2013 8,565,155'Mobile terminal, base station device and mobile communication system'2013 8,526,399'Communications device used in CDMA'2013 8,519,955'Character input device, character input device control method, and information storage medium'2013 8,446,736'Circuit board and manufacturing method thereof'2013 8,436,886'Optical scanning device and image forming apparatus'2013 8,395,056'Multilayer printed wiring board and mounting body using the same'2013 8,367,082'Microgel and external compositions containing the same'2013 8,314,975'Optical scanning device and image forming apparatus'2012 8,290,348'AV data recording apparatus and method, disk recorded with the AV data recording apparatus or method, and AV data reproducing apparatus and method'2012 8,278,565'Three-dimensional wiring board'2012 8,274,474'Character input device, character input device control method, and information storage medium'2012 D0667315'Wrist watch case with band'2012 8,265,561'Radio communication apparatus and interference removing method'2012 8,259,544'Drive device'2012 8,253,033'Circuit board with connection layer with fillet'2012 8,241,829'Resist polymer, resist composition, process for pattern formation, and starting compounds for production of the resist polymer'2012 8,218,297'Electronic circuit device'2012 8,205,501'Mounting structure of ultrasonic sensor'2012 8,144,550'Drive apparatus for performing a sequential recording and reproduction on a write-once recording medium, and method of reproducing same'2012 8,134,082'Solid printed circuit board and method of manufacturing the same'2012 8,114,949'(Meth)acrylate, polymer and resist composition'2012 8,107,332'Drive apparatus for recording a write-once medium'2012 8,088,875'(Meth)acrylate, polymer and resist composition'2012 8,076,589'Multilayer wiring board and its manufacturing method'2011 8,049,042'Resist polymer, resist composition, process for pattern formation, and starting compounds for production of the resist polymer'2011 8,023,166'Optical scanning device and image forming apparatus'2011 8,019,285'Wireless communication device'2011 7,990,825'Drive device'2011 7,986,599'Drive device'2011 7,983,528'Moving image management method and apparatus'2011 7,961,211'Optical scanning device and image forming apparatus'2011 7,956,293'Multilayer printed wiring board and manufacturing method thereof'2011 7,948,845'Drive device'2011 7,940,613'Drive device'2011 7,929,825'Data processing device'2011 7,922,204'Vibration-isolating device for steering wheel of traveling working vehicle with wheel steering mechanism'2011 7,924,666'Drive device'2011 7,911,898'Drive apparatus for performing a sequential recording and reproduction on a write-once recording medium, and method of reproducing same'2011 7,907,478'Drive device'2011 7,894,316'Write-once recording medium, a recording apparatus and a reproducing apparatus for a write-once recording medium'2011 7,869,110'Optical scan apparatus and image formation apparatus'2011 7,855,818'Optical scanning apparatus and image forming apparatus'2010 7,847,481'Plasma display panel and method for fabricating the same'2010 7,813,244'Write-once recording medium, and a recording apparatus and a reproducing apparatus for a write-once recording medium'2010 7,773,089'Displaying character strings based on font information'2010 7,768,892'Recording device, reproduction device, host device, drive device, recording method, reproduction method, program, and information recording medium'2010 7,764,301'Optical scanning device and image forming apparatus'2010 7,760,594'Drive apparatus for performing a sequential recording and reproduction on a write-once recording medium, and method of reproducing same'2010 7,733,752'Drive device'2010 7,729,031'Light-source device, optical scanning device, and image forming apparatus'2010 7,671,787'Target tracking apparatus and method'2010 7,648,001'Speed shift arrangement for work vehicle'2010 7,643,193'Optical scanning apparatus and image forming apparatus'2010 7,629,976'Display device, control method for the same, and information storage medium'2009 7,593,588'Edge preservation type image processing device'2009 7,589,878'Optical scanning device and image forming apparatus'2009 7,496,015'Drive device'2009 7,471,434'Optical scanning device and image forming apparatus'2008 7,386,553'Data processing device'2008 7,383,039'Radio communication system having ID management apparatus, operation management apparatus and line controller'2008 7,358,931'Plasma display device and method for driving the same'2008 7,358,548'Semiconductor integrated circuit having layout in which buffers or protection circuits are arranged in concentrated manner'2008 7,336,033'Plasma display panel and method for fabricating the same'2008 7,333,713'Information recording apparatus and method, and information recording medium on which information is recorded by using them'2008 7,327,946'AV data recording apparatus and method, and disk recorded by the same'2008 7,324,740'AV data recording apparatus and method, and disk recorded by the same'2008 7,319,442'Drive method and drive circuit for plasma display panel'2008 7,305,175'AV data recording apparatus and method, and disk recorded by the same'2007 7,295,652'X-ray image diagnostic apparatus'2007 7,292,781'AV data recording device and method, disk recorded by the AV data recording device and method, AV data reproducing device and method therefor'2007 7,290,213'Method for perusing information'2007 7,260,317'AV data recording apparatus and method, and disk recorded by the same'2007 7,247,508'Semiconductor device with intermediate connector'2007 7,218,844'AV data recording apparatus and method, and disk recorded by the same'2007 7,174,632'Method of manufacturing a double-sided circuit board'2007 7,155,820'Method for manufacturing printed circuit board'2007 7,153,412'Electrodes, electrochemical elements, gas sensors, and gas measurement methods'2006 7,136,884'File managing method and data recorder using the same, data reproducing apparatus, data recording/reproducing apparatus, and disk recorded by the file managing method'2006 7,132,029'Multilayer circuit board and method for manufacturing the same'2006 7,123,264'Moving image management apparatus and method'2006 7,123,645'Spread-spectrum signal receiver'2006 7,118,167'Vehicle body structure'2006 7,088,312'Plasma display and driving method of the same'2006 7,068,275'Methods and apparatus for rendering an image with depth-of-field display'2006 7,025,412'Vehicle body structure'2006 7,018,705'Multilayer circuit board and method for manufacturing the same'2006 7,009,602'Method of driving plasma display panel'2006 7,002,296'Plasma display panel and method for fabricating the same'2006 7,002,883'Disk-shaped storage medium and tracking method using the same'2006 6,954,187'Method for driving address-display separated type AC plasma display panel and driving device using same'2005 6,940,225'Plasma display panel having electrode with first and second portions'2005 6,930,395'Circuit substrate having improved connection reliability and a method for manufacturing the same'2005 6,922,181'Method of controlling luminance of display panel'2005 6,920,173'Spread-spectrum signal receiver apparatus and interference cancellation apparatus'2005 6,916,706'Capacitor sheet, method for producing the same, board with built-in capacitors, and semiconductor device'2005 6,887,652'High density optical disk, apparatus for reproducing optical disk and method for producing optical disk master'2005 6,873,789'AV data recording apparatus and method, and disk recorded by the same'2005 6,836,457'Information reproducing method and information reproducing device'2004 6,827,509'CD transporter with re-transfer printer'2004 6,803,722'Plasma display panel'2004 6,803,888'Drive method and drive circuit for plasma display panel'2004 6,795,044'Plasma display panel and driving method thereof'2004 6,784,857'Method of driving a sustaining pulse for a plasma display panel and a driver circuit for driving a plasma display panel'2004 6,756,628'Capacitor sheet with built in capacitors'2004 6,757,346'Code division multiplex radio equipment with interference canceler'2004 6,753,483'Printed circuit board and method of manufacturing the same'2004 6,748,652'Circuit board and method of manufacturing the same'2004 6,748,012'Multiuser receiver and communication system that performs multicode transmission'2004 6,745,464'Removable film, a substrate with film, a process for forming the removable film and a process for the manufacturing of the circuit board'2004 6,744,440'Image processing apparatus, recording medium, and program'2004 6,734,375'Circuit board having an interstitial inner via hole structure'2004 6,703,772'Plasma display panel with an improved electrode structure'2004 6,696,214'Electrophotographic photoreceptor, process for production thereof, and image-forming apparatus using same'2004 6,680,716'Driving method for plasma display panels'2004 6,680,277'Photocatalytic susbstance'2004 6,639,618'Thermal transfer line printer properly used for forming intermediate transfer type image'2003 6,628,578'Disklike storage medium and tracking method using the same'2003 6,622,112'Tracking apparatus and method capable of presuming position and velocity of an object with high precision'2003 6,607,643'NOx gas detecting apparatus'2003 6,597,334'Driving method of plasma display panel'2003 6,587,407'Information reproducing method and information reproducing device'2003 6,573,105'Test method and control method for coating liquid for electrophotographic photoconductor'2003 6,565,954'Circuit board and method of manufacturing the same'2003 6,546,624'Removable film, a substrate with film, a process for forming the removable film and a process for the manufacturing of the circuit board'2003 6,534,025'Porous materials and methods for forming the same'2003 6,532,651'Circuit board and method of manufacturing the same'2003 6,529,177'Plasma display with reduced power consumption'2003 6,411,268'Plasma display unit with number of simultaneously energizable pixels reduced to half'2002 6,373,020'Welding apparatus'2002 6,295,175'Apparatus for recognizing spin valve head failure due to pin layer magnetic field offset'2001 6,271,811'Method of driving plasma display panel having improved operational margin'2001 6,252,845'High density optical disk, apparatus for reproducing optical disk and method for producing optical disk master'2001 6,252,568'Drive method for plasma display panel'2001 6,197,318'Composition for external use'2001 6,198,385'Entering detecting system for vehicles'2001 6,197,407'Circuit board and method of manufacturing the same'2001 6,178,151'Optical head having a reproducing optical system and filter formed by light passing therethrough'2001 6,177,224'Method of manufacturing electrophotographic toner'2001 6,136,484'Electrophotographic photoreceptor, process for production thereof, and image-forming apparatus using same'2000 6,124,849'Method of controlling alternating current plasma display panel for improving data write-in characteristics without sacrifice of durability'2000 6,118,416'Method of controlling alternating current plasma display panel with positive priming discharge pulse and negative priming discharge pulse'2000 6,110,635'Toner for electrophotography and a production method thereof'2000 6,103,439'Toner used for electrophotography'2000 6,061,316'Multi-track recording/reproducing apparatus, recording/reproducing method, and information recording medium'2000 6,017,160'Printer sheet feed device having controller'2000 6,004,713'Toner, Developer, and process for producing the same'1999 5,990,630'Method for controlling surface discharge alternating current plasma display panel with drivers periodically changing duty factor of data pulses'1999 5,981,129'Electrophotographic toner and method of manufacturing same'1999 5,976,751'Electrophotographic printing-use toner'1999 5,974,280'Image forming apparatus having a toner concentration controlling mechanism based on a clocked time period for the recovery'1999 5,903,245'Method of driving plasma display panel having improved operational margin'1999 5,853,711'Water-in-oil emulsion cosmetic composition'1998 5,850,688'Method of manufacturing electronic component'1998 5,846,683'Toner producing method using recycled extra-fine toner particles'1998 5,799,881'Method and system of producing toner'1998 5,759,735'Method for preparing developer for use in electrophotographic printing'1998 5,748,592'Disk drive apparatus and disk storage medium for high density recording'1998 5,739,641'Circuit for driving plasma display panel'1998 5,687,164'Decoder employing viterbi decoding method for decoding coded multi-valued signal'1997 5,684,499'Method of driving plasma display panel having improved operational margin'1997 5,644,478'Electronic component and its manufacturing method'1997 5,565,294'Electrostatic charge image-developing toner with polyethylene additive'1996 5,494,362'Thermal transfer printer and ink ribbon cassette for use in transfer printer'1996 5,466,076'Ink ribbon cassette for use in transfer printer'1995 5,448,751'Method and apparatus for assigning radio channels in mobile communications systems'1995 5,448,583'Apparatus and method using analog viterbi decoding techniques'1995 5,432,137'Process for producing a highly crystalline, fine .alpha.-alumina powder'1995 5,429,443'Thermal transfer printer with ink ribbon feed controller'1995 5,359,343'Dynamic addressing display device and display system therewith'1994 5,357,488'Watch having a sensor'1994 5,332,639'Toner for use in electrophotography and its manufacturing process comprising a charge control additive of an oxide coated with a mixture of tin oxide and antimony'1994 5,307,085'Display apparatus having shift register of reduced operating frequency'1994 5,295,414'Vibration and noise proofing system for a hydrostatic stepless transmission attached to a transmission case'1994 5,266,433'Developer for electrophotography'1993 5,082,761'Set of electrophotographic toners'1992 RE033779'Preparation process of 4,4-dihydroxybiphenyl'1991 5,071,822'Recording material'1991 5,064,301'Thermal printer'1991 5,050,858'Sheet feed control method'1991 5,049,865'Display apparatus'1991 5,023,161'Method of making a toner for use in electrophotography'1991 4,985,611'Welding equipment'1991 4,982,037'Process for selectively alkylating biphenyl'1991 4,970,338'Preparation process of biphenyl-4,4\'-dicarboxylic acid'1990 4,899,215'Color image recording apparatus'1990 4,889,967'Plural welding rod welding apparatus'1989 4,886,135'Engine cooling structure for agricultural tractor'1989 4,872,576'Soft-metal made can body with squashing guides'1989 4,859,560'Toner for use in electrophotography'1989 4,859,910'Plasma display apparatus'1989 4,822,767'Solvent for chromogenic dye-precursor material for pressure-sensitive recording paper sheet and pressure-sensitive recording paper sheet prepared by using the solvent'1989 4,804,788'Preparation process of 4,4-dihydroxybiphenyl'1989 4,795,493'Solvent for chromogenic dye-precursor material for pressure-sensitive recording paper sheet and pressure-sensitive recording paper sheet prepared by using the solvent'1989 4,786,630'Solvent of a chromogenic dye-precursor material for pressure-sensitive recording paper, the pressure-sensitive recording paper and process for producing the solvent'1988 4,786,195'Erasing means for thermal transfer printer'1988 4,777,636'Path trace viterbi decoder'1988 4,774,136'Solvent for the chromogenic dye-precursor material for a pressure-sensitive recording paper sheet and a pressure-sensitive recording paper sheet prepared by using the solvent'1988 4,746,757'Process for producing (2-hydroxy-2-propyl)-naphthalene compounds'1988 4,737,189'Solvent of a chromogenic dye-precursor material for pressure-sensitive recording paper, the pressure-sensitive recording paper and process for producing the solvent'1988 4,699,658'Solvent for chromogenic dye-precursor material for pressure-sensitive recording paper sheet and pressure-sensitive recording paper sheet prepared by using the solvent'1987 4,699,659'Solvent for chromogenic dye-precursor material for pressure-sensitive recording paper sheet and pressure-sensitive recording paper sheet prepared by using the solvent'1987 4,657,417'Thermal printer'1987 4,651,162'Thermal printer erasure method'1987 D0283135'Agricultural tractor'1986 D0282070'Computer'1986 D0279191'Keyboard'1985 4,447,685'Small-sized push-button switch'1984 4,418,783'Tractor'1983 4,419,009'Data converting method for reordered prints'1983 4,311,996'Hand held type electronic calculators'1982 4,164,683'Fluorescent display tube'1979 4,102,537'Seated-operator type tractor'1978 4,087,372'An absorbing solution for the removal of nitrogen oxide form a gas containing same'1978 4,071,299'Transmittance densitometer'1978 4,055,623'Method of removing nitrogen oxides from a gas as a salt of imidodisulfonic acid'1977 4,031,000'Diaphragm for electrolytic production of caustic alkali'1977 3,992,508'Method of removing nitrogen oxides from a gas containing nitrogen oxides'1976 3,991,161'Method of removing nitrogen oxides from a gas and for converting same to ammonium sulfate'1976 3,971,735'Methanol production catalyst and process for preparing the same'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1989Based in Iwaki, JP· patent location history

1984–2020Based in Tokyo, JP· patent location history

1989–2020Patents assigned to NAKAMURA TADASHI (58)· patent assignee history

1989–2010Patents assigned to NEC CORP (24)· patent assignee history

1989–2012Based in Nara, JP· patent location history

1989–2019Based in Kanagawa, JP· patent location history

1994–2013Based in Osaka, JP· patent location history

1997–2012Patents assigned to MATSUSHITA ELECTRIC INDUSTRIAL CO LTD (41)· patent assignee history

2010–2020Patents assigned to RICOH CO LTD (34)· patent assignee history

2010–2013Patents assigned to PANASONIC CORP (24)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
NAKAMURA TADASHIself	58	1989–2020
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD	41	1997–2012
RICOH CO LTD	34	2010–2020
NEC CORP	24	1989–2010
PANASONIC CORP	24	2010–2013

Locations

Location	Patents	Span
Tokyo, JP	69	1984–2020
Nara, JP	40	1989–2012
Osaka, JP	24	1994–2013
Kanagawa, JP	21	1989–2019
Iwaki, JP	13	1976–1989