Inventor

Hiroshi Hirayama

Inventor

Yokohama, JP

Overview

1976–2021

Patent span

Physics

Primary field (CPC G)

Patents· 105 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 transducer11%

G06FElectric digital data processing9%

Y02TClimate change mitigation technologies related to transportation7%

G01FMeasuring volume, volume flow, mass flow or liquid level6%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry4%

F01NGas-flow silencers or exhaust apparatus for machines or engines in general4%

F02DControlling combustion engines3%

G01NInvestigating or analysing materials by determining their chemical or physical properties3%

B01DSeparation2%

G02BOptical elements, systems or apparatus2%

PatentTitleYear

11,089,667X-ray computed tomography apparatus2021 10,806,418X-ray CT apparatus and imaging condition calculating method2020 10,787,193Drive control device and control method for electric motor2020 10,677,731Method of manufacturing sensing chip and sensing chip2020 10,660,190X-ray computed tomography apparatus2020 10,495,576Surface-plasmon enhanced fluorescence measurement method, surface-plasmon enhanced fluorescence measurement device, and analytical chip2019 10,381,188Radiographic image diagnostic apparatus and X-ray tube2019 10,360,144Storage apparatus and non-volatile memory device including a controller to selectively compress data based on an update frequency level2019 10,260,921Thermal flow meter2019 10,240,237Black coupling member for vehicles, having excellent corrosion resistance and black appearance2019 10,198,318Storage apparatus having nonvolatile memory device, and nonvolatile memory device2019 10,005,104Black coating film-forming vehicle component and/or fastening component, and manufacturing method thereof2018 9,898,201'Non-volatile memory device, and storage apparatus to reduce a read retry occurrence frequency and prevent read performance from lowering'2018 9,817,768'Storage system and data storing method'2017 9,645,926'Storage system and method for managing file cache and block cache based on access type'2017 9,535,004'Surface plasmon resonance fluorescence analysis method and surface plasmon resonance fluorescence analysis device'2017 9,421,877'Power transmission system and power supply device for vehicles'2016 9,238,224'Microchip'2016 9,188,768'Optical element and production method of the same'2015 9,162,225'Microchip'2015 9,098,202'Storage apparatus and data management method'2015 9,075,729'Storage system and method of controlling data transfer in storage system'2015 8,806,126'Storage apparatus, storage system, and data migration method'2014 8,677,167'Storage apparatus and power control method'2014 8,639,899'Storage apparatus and control method for redundant data management within tiers'2014 8,572,342'Data transfer device with confirmation of write completion and method of controlling the same'2013 8,463,981'Storage apparatus having deduplication unit'2013 RE044086'Display substrate, electro-optical device, and electronic apparatus'2013 8,383,063'Microchip and microchip manufacturing method'2013 8,350,802'Electrophoretic device with capacitive storage and applied fluctuating signal, method of driving the same, and electronic apparatus'2013 8,352,663'Data storage apparatus and method of data transfer'2013 8,320,044'Optical element and production method of the same'2012 8,285,913'Storage apparatus and interface expansion authentication method therefor'2012 8,266,342'Storage system'2012 8,161,211'Storage system and data processing method for the same'2012 8,149,681'Combination type optical disk medium, its reproduction method and optical disk apparatus'2012 8,102,363'Electrophoresis display device, electrophoresis display device driving method, and electronic apparatus'2012 7,963,161'Heating resistor type air flow rate measuring device utilizing an auxiliary passage'2011 RE042308'Display substrate, electro-optical device, and electronic apparatus'2011 7,904,616'Storage apparatus and data transfer method'2011 7,792,007'Optical device for monitor and optical pickup apparatus'2010 7,773,496'Combination type optical disk medium, its reproduction method and optical disk apparatus'2010 7,769,921'Storage apparatus and data transfer method'2010 7,750,473'LSI wiring pattern for reduced deformation and cracking'2010 7,733,579'Image pickup system'2010 7,710,444'Image forming apparatus for forming a latent image on an image carrier'2010 7,696,996'Laser scanning microscope apparatus'2010 7,512,055'Objective optical element and optical pickup apparatus'2009 7,457,224'Optical element having an anti-reflection film and optical pickup apparatus'2008 7,383,815'Air flow measuring device formed integrally with electronically controlled throttle body'2008 7,376,057'Disk recording apparatus and disk recording method'2008 7,286,464'Optical element and optical pick-up device'2007 7,248,550'Writing method and disk recording apparatus'2007 7,215,612'Disk recording apparatus and disk recording method'2007 7,106,279'Display substrate, electro-optical device, and electronic apparatus'2006 7,079,323'Surface treatment method and optical part'2006 7,034,442'Electro-optical device, method of manufacturing the same, and electronic instrument'2006 6,997,162'Air flow measuring device formed integrally with electronically controlled throttle body'2006 6,889,352'Digital signal forming method, disc recording media using the same, and reproducing method thereof'2005 6,838,798'Permanent magnet type rotating electric machine'2005 6,810,859'Control system of internal combustion engine with output correcting means of thermal type air flow sensor'2004 6,806,225'Catalyst for exhaust gas purification, process for producing the same, and method of purifying exhaust gas'2004 6,763,429'Method and apparatus for recording and playing back information'2004 6,681,742'Air flow measuring device formed integrally with electronically controlled throttle body'2004 6,552,461'Permanent magnet type rotating electric machine'2003 6,535,877'Pattern recognition apparatus'2003 6,347,353'Information medium having digital signals recorded thereon'2002 6,332,174'Digital signal reproducing apparatus'2001 6,327,905'Air flow measurement apparatus'2001 6,324,618'Optical disk reproducing apparatus'2001 6,233,649'Digital signal reproducing method'2001 6,189,379'Thermal type air flow measuring instrument for internal combustion engine'2001 6,181,660'Digital signal processor circuit for reproduction of digital data'2001 6,154,806'Method for recording digital signals on multiple-layered disks'2000 6,147,023'Hydrocarbon-adsorbent'2000 6,112,173'Pattern recognition device using tree structure data'2000 6,076,135'Information medium having a plurality of recording surfaces'2000 5,966,721'Digital signal recording method and disk reproducing apparatus'1999 5,958,827'Solid solution particle of oxides, a process for producing the same and a catalyst for purifying exhaust gases'1999 5,939,628'Thermal type air flow measuring instrument for internal combustion engine'1999 5,856,917'Electric power device with improved power factor'1999 5,854,999'Method and system for speech recognition with compensation for variations in the speech environment'1998 5,812,739'Speech recognition system and speech recognition method with reduced response time for recognition'1998 5,795,992'Method of testing durability of exhaust gas purification device'1998 5,789,673'Thermal type air flow measuring instrument for internal combustion engine'1998 5,682,121'No turn-on pop noise amplifier'1997 5,642,076'No turn-on pop noise amplifier'1997 5,631,415'Air flow rate measuring device'1997 5,582,803'Electrically heated catalytic apparatus'1996 5,582,805'Electrically heated catalytic apparatus'1996 5,554,342'Electrical heating type catalytic device'1996 5,537,081'No turn-on pop noise amplifier'1996 5,497,619'Exhaust gas purification apparatus'1996 5,488,591'Improved magneto-optical recording apparatus for digital signal information'1996 5,467,648'Air flow rate measuring device'1995 5,388,403'Exhaust gas purification device for an engine'1995 5,271,906'Exhaust emission control apparatus using catalytic converter with hydrocarbon absorbent'1993 5,064,112'Jointing Ti-A1 alloy member and structural steel member'1991 4,842,654'Method of heat treatment of low melting-point metal on an electrode of a chip part'1989 4,501,773'Granulation process'1985 4,354,450'Jet layer granulator'1982 4,353,709'Granulation process'1982 4,353,730'Granulating process'1982 4,332,211'Granule producing apparatus'1982 3,990,892'Wear resistant and heat resistant alloy steels'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989–2021Based in Tokyo, JP· patent location history

1993–2016Patents assigned to TOYOTA MOTOR CO LTD (11)· patent assignee history

1995–2019Patents assigned to HITACHI LTD (43)· patent assignee history

1995–2004Based in Okazaki, JP· patent location history

1996–2013Patents assigned to SEIKO EPSON CORP (8)· patent assignee history

1998–2020Based in Hitachinaka, JP· patent location history

1999–2017Based in Yokohama, JP· patent location history

2006–2020Based in Musashino, JP· patent location history

2007–2013Patents assigned to KONICA MINOLTA OPTO INC (7)· patent assignee history

2012–2016Patents assigned to HIRAYAMA HIROSHI (20)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	43	1995–2019
HIRAYAMA HIROSHIself	20	2012–2016
TOYOTA MOTOR CO LTD	11	1993–2016
SEIKO EPSON CORP	8	1996–2013
KONICA MINOLTA OPTO INC	7	2007–2013

Locations

Location	Patents	Span
Yokohama, JP	28	1999–2017
Tokyo, JP	16	1989–2021
Musashino, JP	10	2006–2020
Hitachinaka, JP	9	1998–2020
Okazaki, JP	8	1995–2004