Inventor

Yukio Takahashi

Inventor

Tokyo, JP

Overview

1977–2021

Patent span

Mechanical engineering

Primary field (CPC F)

Patents· 126 as inventor

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

F04Bprimary

F04BPositive-displacement machines for liquids8%

H01FMagnets7%

C04BLime, magnesia5%

H10DInorganic electric semiconductor devices4%

F01DNon-positive displacement machines or engines, e.g. steam turbines3%

G01LMeasuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure3%

H04NPictorial communication, e.g. television3%

Y10TTechnical subjects covered by former us classification3%

F02BInternal-combustion piston engines3%

F02MSupplying combustion engines in general with combustible mixtures or constituents thereof3%

PatentTitleYear

11,043,537Three-dimensional phase change memory device including vertically constricted current paths and methods of manufacturing the same2021 11,039,570Working machine and method of braking driving device of working machine2021 11,038,314Electronic device assembling apparatus2021 10,839,995Ferrite composition and multilayer electronic component2020 10,770,210Ferrite composition and electronic device2020 D0869335Passenger carrying car2019 10,487,725Variable flow valve mechanism and turbocharger2019 10,475,882Semiconductor device2019 D0860049Passenger carrying car2019 10,366,985Semiconductor device having a sense IGBT for current detection of a main IGBT2019 10,280,836Variable nozzle unit and variable geometry system turbocharger2019 10,181,440Semiconductor device2019 10,074,476Ferrite composition and electronic component2018 10,020,791Ferrite composition and electronic component2018 9,984,806Coil mounting structure2018 9,984,799Ferrite composition and electronic component2018 9,985,584High-frequency semiconductor amplifier2018 9,957,581Method for refining hot metal in converter2018 9,905,365'Composite electronic device'2018 9,890,753'High-pressure fuel supply pump'2018 9,754,877'Semiconductor device'2017 9,751,538'Sound absorbing panel'2017 9,663,119'Railroad vehicle and plug door for railroad vehicle'2017 9,631,628'Turbocharger'2017 9,580,764'Top-blowing lance and method for refining molten iron using the same'2017 9,536,645'Ferrite composition and electronic component'2017 9,494,049'Turbocharger'2016 9,403,540'Railroad vehicle and plug door for railroad vehicle'2016 D0757605'Passenger carrying car'2016 D0756843'Passenger carrying car'2016 9,193,289'Vehicle seat'2015 9,048,751'Power supply circuit with ripple compensation'2015 9,028,004'Vehicle seat'2015 D0723819'Vehicle seat'2015 D0707998'Vehicle seat'2014 8,714,065'Punching die'2014 D0701818'Sound absorbing portions of passenger carrying car'2014 D0701817'Sound absorbing portions of passenger carrying car'2014 D0701482'Sound absorbing portions of passenger carrying car'2014 D0701483'Sound absorbing portions of passenger carrying car'2014 8,647,525'Ferrite composition and electronic component'2014 8,643,145'Semiconductor device'2014 8,536,843'Power supply circuit'2013 8,536,680'ESD protection circuit and semiconductor device'2013 8,250,238'Network device, address change notification method, and address change notification program'2012 8,115,853'Digital camera having input devices and a display capable of displaying a plurality of set information items'2012 8,096,952'Electric-powered air release valve and blood pressure gauge'2012 7,994,682'Brush device for motor'2011 7,940,256'Liquid crystal display driver including a voltage selection circuit having optimally sized transistors, and a liquid crystal display apparatus using the liquid crystal display driver'2011 7,936,390'Digital camera having input devices and a display capable of displaying a plurality of set information items'2011 7,875,904'Protection circuit'2011 7,837,448'Supercharger'2010 7,707,996'High pressure fuel supply pump for internal combustion engine'2010 7,642,621'Semicondutor device and protection circuit'2010 7,605,936'Print job creation apparatus and print job creation and output method'2009 7,589,609'Multilayer inductor component'2009 7,540,274'High pressure fuel supply pump for internal combustion engine'2009 7,530,230'Supercharger with electric motor'2009 7,527,744'NiCuZn-base ferrites and electronic parts using the same'2009 7,449,750'Semiconductor protection device'2008 7,352,077'Motor-driven supercharger'2008 7,257,010'Power supply circuit'2007 7,225,672'Liquid level sensor and method of manufacturing the same'2007 7,104,960'Noninvasive sphygmomanometer'2006 7,070,732'Method for producing an oxide magnetic material'2006 7,021,139'Non-contact type liquid level sensor'2006 7,008,379'Noninvasive sphygmomanometer'2006 6,952,229'Digital camera having input devices and a display capable of displaying a plurality of set information items'2005 6,895,992'Fuel pump for inter-cylinder direct fuel injection apparatus'2005 6,860,255'Fuel pump and direct fuel injection engine'2005 6,736,990'Ferrite material'2004 6,721,829'Information transmission method, information processing method, information processing apparatus, electronic device, and imaging apparatus'2004 6,631,706'High pressure fuel supply pump for internal combustion engine'2003 6,558,807'Oxide magnetic material, coil components using the same, and method for producing oxide magnetic materials and coil components'2003 6,543,424'Fuel pump, in-cylinder direct injection type internal combustion engine using the same and surface treatment method'2003 6,505,608'Fuel supply system'2003 6,488,478'High pressure fuel pump'2002 D0466539'Digital camera'2002 6,485,840'Oxide magnetic material and chip part'2002 6,471,491'High pressure fuel pump'2002 6,371,722'Gas sealing apparatus for variable capacity supercharger'2002 6,368,071'High pressure fuel pump'2002 6,361,286'Fuel pump'2002 6,312,217'Variable capacity supercharger'2001 6,251,299'Magnetic material, inductance element using the same and manufacturing method thereof'2001 6,211,772'Semiconductor composite sensor'2001 6,171,414'Rolling bearing'2001 6,098,519'Fuel pump'2000 6,047,684'Gear pump and fuel transfer system using the gear pump'2000 5,993,173'Turbocharger'1999 5,960,697'Axial piston machine'1999 5,759,232'Method of charging materials into cupola'1998 5,749,829'Endoscope system'1998 5,735,793'Endoscope'1998 5,672,826'Semiconductor pressure sensor'1997 5,626,411'Light ray shift devices and projection display apparatus using the same'1997 5,583,694'Optical element and optical axis displacement device using the same'1996 5,537,882'Semiconductor sensor for detecting physical amount without thermal hypsteresis where output wiring is disposed in a stress insensitive direction'1996 5,532,736'Display and image capture apparatus'1996 5,460,027'Punch clamp device'1995 5,373,333'Presentation apparatus'1994 5,365,766'Die assembly having means for automatically controlling in the angular orientation of the lower die plate members'1994 5,231,914'Variable displacement compressor'1993 5,168,270'Liquid crystal display device capable of selecting display definition modes, and driving method therefor'1992 5,105,728'Balanced variable-displacement compressor'1992 5,063,829'Variable displacement swash plate type compressor'1991 5,028,208'Nozzle blade angle adjustment device for variable geometry turbocharger'1991 4,867,649'Refrigerating system'1989 4,815,943'Variable displacement wobble plate compressor with capacity control valve'1989 4,801,248'Variable capacity swash plate compressor'1989 4,782,712'Variable displacement compressor'1988 4,768,070'Optoelectronics device'1988 4,711,620'Moving vane type compressor'1987 4,691,140'Fluorescent lamp'1987 4,618,844'Semiconductor pressure transducer'1986 4,546,653'Semiconductor differential pressure transducer'1985 4,409,674'Semiconductor memory'1983 4,394,657'Decoder circuit'1983 4,370,262'Catalytic structure for treating exhaust gases and a process for making the catalytic structure'1983 4,370,736'Termination circuit for word lines of a semiconductor memory device'1983 4,348,747'System for driving bipolar ram'1982 4,342,231'Differential pressure transmitter'1982 4,233,525'Electronic circuit for use in a digital circuit which prevents passage of pulses having a pulse width narrower than a predetermined value'1980 4,173,900'Semiconductor pressure transducer'1979 4,065,971'Semiconductor pressure transducer'1978 4,050,313'Semiconductor pressure transducer'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–2010Patents assigned to HITACHI LTD (30)· patent assignee history

1977–1993Based in Katsuta, JP· patent location history

1992–2020Based in Tokyo, JP· patent location history

1997–2019Based in Hitachinaka, JP· patent location history

2001–2020Patents assigned to TDK CORP (15)· patent assignee history

2008–2014Based in Kanagawa, JP· patent location history

2012–2015Patents assigned to TAKAHASHI YUKIO (9)· patent assignee history

2014–2019Patents assigned to TOKAI RYOKAKU TETSUDO KK (16)· patent assignee history

2014–2019Patents assigned to NIPPON SHARYO LTD (11)· patent assignee history

2014–2019Based in Nagoya, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	30	1977–2010
TOKAI RYOKAKU TETSUDO KK	16	2014–2019
TDK CORP	15	2001–2020
NIPPON SHARYO LTD	11	2014–2019
TAKAHASHI YUKIOself	9	2012–2015

Locations

Location	Patents	Span
Tokyo, JP	27	1992–2020
Hitachinaka, JP	19	1997–2019
Katsuta, JP	14	1977–1993
Nagoya, JP	12	2014–2019
Kanagawa, JP	8	2008–2014