Inventor

Masahiro Takagi

Inventor

Tokyo, JP

Overview

1989–2020

Patent span

Electricity

Primary field (CPC H)

Patents· 146 as inventor

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

H04Wprimary

H04WWireless communication networks20%

H04LTransmission of digital information, e.g. telegraphic communication18%

G03GElectrography14%

H04BTransmission5%

Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications4%

Y02DClimate change mitigation technologies in information and communication technologies [ict], i.e. information and communication technologies aiming at the reduction of their own energy use4%

Y10TTechnical subjects covered by former us classification3%

C03BManufacture, shaping, or supplementary processes3%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests3%

H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light2%

PatentTitleYear

10,642,562Display apparatus and display system2020 10,244,431Radio communication device, method, and program that calculate transmission time based on data rate2019 10,154,436Communication apparatus, communication method, and communication system2018 10,078,485Display apparatus and display system2018 9,930,572'Radio communication device, method, and program that calculate transmission time based on data rate'2018 9,872,203'Communication apparatus, communication method, and communication system'2018 9,622,112'Radio communication device, method, and program that calculate transmission time based on data rate'2017 9,585,172'Communication apparatus, communication method, and communication system'2017 9,414,264'Communication apparatus, communication method, and communication system'2016 9,408,068'Wireless communication apparatus and user equipment'2016 RE045970'Toner for electrostatic image development, toner cartridge, process cartridge and image forming apparatus'2016 9,143,982'Communication apparatus, communication method, and communication system'2015 9,094,863'Radio communication device, method, and program that calculate transmission time based on data rate'2015 9,052,622'Electrostatic image developing toner, electrostatic image developer, toner cartridge, process cartridge, image forming apparatus and image forming method'2015 8,923,174'Wireless apparatus capable of reducing receiver power'2014 8,911,923'Toner for developing electrostatic charge image, electrostatic charge image developer, toner cartridge, developer cartridge, process cartridge, image forming apparatus, and image forming method'2014 8,877,419'Method of forming composite color image'2014 8,824,393'Wireless communication device'2014 8,741,516'Electrostatic charge image developing toner, electrostatic charge image developer, toner cartridge, developer cartridge, process cartridge, image forming apparatus, and image forming method'2014 8,741,528'Electrostatic charge image developing toner, electrostatic charge image developer, toner cartridge, developer cartridge, process cartridge, image forming apparatus, and image forming method'2014 8,728,693'Toner for developing electrostatic image, method of producing toner, cartridge, image forming method, and image forming apparatus'2014 8,652,726'Toner for developing electrostatic image, method of producing toner, cartridge, image forming method, and image forming apparatus'2014 8,628,904'Carrier, developer for replenishment, developer cartridge for replenishment, and image forming apparatus'2014 8,580,468'Developer for electrostatic photography, process cartridge for image forming apparatus, image forming apparatus, and image forming method'2013 8,559,399'Semiconductor device, wireless terminal device, and wireless communication system'2013 8,503,339'Wireless communication apparatus and method'2013 8,494,404'Image forming apparatus, image forming method, cleaning apparatus, and cleaning method'2013 8,472,468'Communication apparatus, communication method, and communication system'2013 8,406,214'Communication apparatus, communication method, and communication system'2013 8,379,545'Communication method, communication apparatus, and communication system'2013 8,289,987'Wireless communication system and wireless terminal'2012 8,284,753'Wireless communication apparatus and wireless communication method'2012 8,274,992'Communication method for wireless lans'2012 8,228,889'Communication apparatus, communication system and communication control program'2012 8,227,158'Toner for electrostatic image development, toner cartridge, process cartridge and image forming apparatus'2012 8,107,404'Wireless communication control apparatus and method'2012 8,068,455'Radio communication apparatus and radio communication method'2011 8,064,371'Radio communication apparatus, computer readable storage medium, and radio communication system'2011 8,062,822'Carrier for electrostatic latent image development and electrostatic latent image developer'2011 7,990,995'Wireless communication apparatus and wireless communication method'2011 7,955,773'Toner for developing electrostatic image, developer for developing electrostatic image, toner cartridge, process cartridge, and image forming apparatus'2011 7,924,805'Communication apparatus, communication system, and communication control program'2011 7,903,607'Wireless communication apparatus'2011 7,903,632'Communication apparatus and communication method'2011 7,869,418'Communication apparatus and communication method'2011 7,853,172'Image forming device with aggregation-forming unit that removes adherents'2010 7,852,791'Wireless communication apparatus and method'2010 7,848,330'Communication apparatus and method'2010 7,773,601'Wireless communication apparatus'2010 7,756,162'Wireless communication apparatus and wireless communication method'2010 7,746,861'Communication apparatus and method'2010 7,743,310'Communication apparatus, communication system, communication method, and communication control program'2010 7,738,441'Communication apparatus and communication method'2010 7,706,408'Communication apparatus, communication method, and communication system'2010 7,701,962'Wireless communication apparatus and wireless communication method'2010 7,697,491'Retransmission control of burst transmission by wireless communication apparatus'2010 7,697,561'Communication apparatus, communication method, and communication system'2010 7,680,110'Communication device, communication system, and communication method'2010 7,680,148'Communication apparatus and communication method'2010 7,675,893'Communication apparatus, communication method, and communication system'2010 7,664,129'Wireless communication method and apparatus'2010 7,650,559'Communication apparatus, communication system, communication method, and communication control program'2010 7,626,968'Wireless communication system and wireless terminal'2009 7,558,225'Radio communication system'2009 7,496,076'Communication apparatus, communication method, and communication system'2009 7,443,983'Communication apparatus and method'2008 7,430,195'Wireless communication system and wireless communication apparatus'2008 7,369,731'Optical fiber for amplification, optical amplifying apparatus, light source apparatus, photo-therapy apparatus, and exposure apparatus'2008 7,369,511'Communication method, communication apparatus, and communication system'2008 7,347,056'Vehicle air-conditioning system'2008 7,343,162'Wireless communication method, wireless communication apparatus, and wireless communication system'2008 7,336,415'Optical amplification module, optical amplification apparatus, and optical communications system'2008 7,321,569'Radio communication system using point-to-point and point-to-multipoint user information communications'2008 7,269,148'Scheme for adaptive control of transport layer connection in communications via radio and wire networks'2007 7,236,782'Wireless communication apparatus and wireless communication method'2007 7,143,282'Communication control scheme using proxy device and security protocol in combination'2006 7,132,770'Axial-air-gap brushless vibration motor containing drive circuit'2006 7,094,508'Electrophotographic toner, electrophotographic developer and image formation method using the same'2006 7,085,535'Radio communication device for avoiding frequency collision among different radio control schemes'2006 7,049,721'Eccentric rotor and a vibrating motor using the same'2006 7,028,077'Communication system and communication method'2006 6,998,743'Stator incorporating drive circuit and axial-gap brushless motor comprising same stator'2006 6,998,742'Axial-air-gap brushless vibration motor containing drive circuit'2006 6,965,580'Radio communication system using point-to-point and point-to-multipoint user information communications'2005 6,937,600'Communication device and communication control method using lower layer data transmission order control at upper layer'2005 6,893,788'Electrophotographic toner, electrophotographic developer and image formation method using the same'2005 6,865,019'Amplification optical fiber and fiber optic amplifier including the same'2005 6,804,046'Optical amplification fiber, fiber optic amplifier, and optical communication system'2004 6,746,810'Image formation method, replenishing toner used in this method and method of producing the same, and carrier-containing toner cartridge'2004 6,673,502'Carrier for development of electrostatic latent image, electrostatic latent image developer and image forming method'2004 6,613,491'Electrophotographic toner, electrophotographic developer and process for forming image'2003 6,576,058'Optical fiber coating method and coating apparatus'2003 6,538,807'Amplification optical fiber, fiber optic amplifier, optical transmitter, and optical communication system'2003 6,517,985'Electrophotographic developer and process for forming image'2003 6,490,078'Optical fiber for optical amplifier, optical fiber amplifier and optical fiber laser'2002 6,489,075'Toner for developing electrostatic latent image, process for producing the same, developer for developing electrostatic latent image, and process for forming image'2002 6,479,206'Toner for developing electrostatic latent image, process for producing the same, developer for developing electrostatic latent image, and process for forming image'2002 6,453,146'Cleaning blade for latent image holding member, apparatus for forming image and process for forming image'2002 6,418,128'Scheme for adaptive control of transport layer connection in communications via radio and wire networks'2002 6,403,271'Toner for developing electrostatic latent image, process for producing the same, developer for developing electrostatic latent image, and process for forming image'2002 6,347,537'Method of drawing a twisted optical fiber'2002 6,272,148'Scheme for reliable communications via radio and wire networks using transport layer connection'2001 6,243,755'Information processing system using information caching based on user activity'2001 6,132,875'Magnetic recording medium and magnetic head having carbon protective layers'2000 6,091,733'Communication device using communication protocol including transport layer and communication method using communication protocol including transport layer'2000 6,076,593'Method of and apparatus for controlling vehicular air-conditioning system'2000 6,076,376'Method of making an optical fiber having an imparted twist'2000 6,042,979'Toner for developer of electrostatic latent image, method for producing toner for developer of electrostatic latent image, developer of electrostatic latent image and method for forming image'2000 6,005,481'Remaining fuel alarm for vehicular fuel-combustion heater'1999 5,965,313'Toners for electrophotography, developers for electrophotography and methods for forming images using the same'1999 5,940,237'Disk medium whose track density is changed in a radial direction and disk apparatus using the same disk medium'1999 5,935,753'Toner and developer for electrostatic latent image development and image forming method using the same'1999 5,887,136'Communication system and communication control method for the same'1999 5,884,129'Electrostatic-image developer and image forming process'1999 5,881,231'Information processing system using information caching based on user activity'1999 5,854,715'Method for tracking a read head on a data area on a disk and disk apparatus using the method'1998 5,804,351'Toner for electrostatic-image development, developer for electrostatic image, and image forming process using the same'1998 5,791,716'Structure for supporting pillar garnish for automobile'1998 5,735,569'Structure for attaching assist grip for automobile'1998 5,711,982'De-lactose milk and de-lactose milk powder, and foodstuffs containing the same and process therefor'1998 5,693,444'Electrostatic-image developer and image forming process'1997 5,681,605'Pretzel and method for preparation of the same'1997 5,665,507'Resin-coated carrier for electrophotographic developer'1997 5,595,064'Control system for air-conditioner on electric vehicle'1997 5,586,448'Defrosting control system for use in an air-conditioner in an electric vehicle'1996 5,486,276'Method for manufacturing small magnetic disks from a large disk'1996 5,468,315'Method of and apparatus for producing multilayer ceramic board'1995 5,362,596'Carrier for developing electrostatic latent image and process for producing the same'1994 5,275,902'Developer composition for electrophotography'1994 5,269,584'Reinforcement with tubular portion for receiving bolt'1993 5,256,511'Carrier for developing electrostatic latent image and process for producing the same'1993 5,247,452'Controller for cutting machine'1993 5,243,533'Tool abnormality detecting device'1993 5,232,734'Heat resistant chocolate and production method thereof'1993 5,221,307'Method for producing preform for polarization retaining optical fiber'1993 5,213,391'Body skeleton element of vehicle and manufacturing method thereof'1993 5,207,813'Method for producing glass article'1993 5,171,570'Substance having suppressing function for diseases relating to increase in cholesterol, and foods and drinks in which it is used'1992 5,160,522'Method for producing preform for polarization retaining optical fiber'1992 5,160,760'Heat-resistant chocolate and a method for producing it'1992 5,059,504'Carrier for developer'1991 5,031,580'Oil lubricating and cooling system for engines'1991 4,978,378'Method for producing glass preform for optical fiber'1990 4,929,528'Coated carrier for developer'1990 4,900,894'Method of heating a quartz glass tube'1990 4,822,399'Glass preform for dispersion shifted single mode optical fiber and method for the production of the same'1989

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989–2008Patents assigned to SUMITOMO ELECTRIC INDUSTRIES (15)· patent assignee history

1989–2008Based in Yokohama, JP· patent location history

1990–2016Patents assigned to FUJI XEROX CO LTD (37)· patent assignee history

1990–2016Based in Kanagawa, JP· patent location history

1993–2011Based in Minami-ashigara, JP· patent location history

1999–2020Patents assigned to TOSHIBA KK (68)· patent assignee history

1999–2020Based in Tokyo, JP· patent location history

2006Based in Isesaki, JP· patent location history

2011–2015Patents assigned to TAKAGI MASAHIRO (27)· patent assignee history

2011–2015Patents assigned to UTSUNOMIYA YORIKO (11)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
TOSHIBA KK	68	1999–2020
FUJI XEROX CO LTD	37	1990–2016
TAKAGI MASAHIROself	27	2011–2015
SUMITOMO ELECTRIC INDUSTRIES	15	1989–2008
UTSUNOMIYA YORIKO	11	2011–2015

Locations

Location	Patents	Span
Tokyo, JP	65	1999–2020
Minami-ashigara, JP	19	1993–2011
Kanagawa, JP	18	1990–2016
Yokohama, JP	15	1989–2008
Isesaki, JP	4	2006