Inventor
HIRAYAMA HIROSHI
JP106 patents
⚠️ This page may combine multiple inventors who share the name “HIRAYAMA HIROSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
21 patentsUS6763429B1Jul 13, 2004
Method and apparatus for recording and playing back information
HITACHI LTD111 citations98
US5966721AOct 12, 1999
Digital signal recording method and disk reproducing apparatus
HITACHI LTD37 citations96
US5467648ANov 21, 1995
Air flow rate measuring device
HITACHI LTD45 citations96
US5939628AAug 17, 1999
Thermal type air flow measuring instrument for internal combustion engine
HITACHI LTD18 citations93
US5789673AAug 4, 1998
Thermal type air flow measuring instrument for internal combustion engine
HITACHI LTD34 citations93
US6838798B2Jan 4, 2005
Permanent magnet type rotating electric machine
HITACHI LTD16 citations92
US6552461B2Apr 22, 2003
Permanent magnet type rotating electric machine
HITACHI LTD18 citations92
US6181660B1Jan 30, 2001
Digital signal processor circuit for reproduction of digital data
HITACHI LTD21 citations92
US5631415AMay 20, 1997
Air flow rate measuring device
HITACHI LTD31 citations92
US6681742B1Jan 27, 2004
Air flow measuring device formed integrally with electronically controlled throttle body
HITACHI LTD32 citations89
US7383815B2Jun 10, 2008
Air flow measuring device formed integrally with electronically controlled throttle body
HITACHI LTD11 citations83
US6154806ANov 28, 2000
Method for recording digital signals on multiple-layered disks
HITACHI LTD11 citations82
US6076135AJun 13, 2000
Information medium having a plurality of recording surfaces
HITACHI LTD12 citations82
US7769921B2Aug 3, 2010
Storage apparatus and data transfer method
HITACHI LTD7 citations74
US6347353B1Feb 12, 2002
Information medium having digital signals recorded thereon
HITACHI LTD7 citations74
US6233649B1May 15, 2001
Digital signal reproducing method
HITACHI LTD7 citations74
US6189379B1Feb 20, 2001
Thermal type air flow measuring instrument for internal combustion engine
HITACHI LTD12 citations74
US9817768B2Nov 14, 2017
Storage system and data storing method
HITACHI LTD2 citations73
US9645926B2May 9, 2017
Storage system and method for managing file cache and block cache based on access type
HITACHI LTD3 citations73
US8352663B2Jan 8, 2013
Data storage apparatus and method of data transfer
HITACHI LTD5 citations73
US6327905B1Dec 11, 2001
Air flow measurement apparatus
HITACHI LTD11 citations73
TOYOTA MOTOR CO LTD
8 patentsUS5958827ASep 28, 1999
Solid solution particle of oxides, a process for producing the same and a catalyst for purifying exhaust gases
TOYOTA MOTOR CO LTD70 citations96
US5582805ADec 10, 1996
Electrically heated catalytic apparatus
TOYOTA MOTOR CO LTD69 citations95
US5271906ADec 21, 1993
Exhaust emission control apparatus using catalytic converter with hydrocarbon absorbent
TOYOTA MOTOR CO LTD66 citations95
US5554342ASep 10, 1996
Electrical heating type catalytic device
TOYOTA MOTOR CO LTD23 citations92
US5388403AFeb 14, 1995
Exhaust gas purification device for an engine
TOYOTA MOTOR CO LTD31 citations92
US6806225B1Oct 19, 2004
Catalyst for exhaust gas purification, process for producing the same, and method of purifying exhaust gas
TOYOTA MOTOR CO LTD37 citations88
US5582803ADec 10, 1996
Electrically heated catalytic apparatus
TOYOTA MOTOR CO LTD18 citations81
US6147023ANov 14, 2000
Hydrocarbon-adsorbent
TOYOTA MOTOR CO LTD12 citations74
SEIKO EPSON CORP
4 patentsUS7106279B2Sep 12, 2006
Display substrate, electro-optical device, and electronic apparatus
SEIKO EPSON CORP11 citations84
USRE42308EApr 26, 2011
Display substrate, electro-optical device, and electronic apparatus
SEIKO EPSON CORP6 citations74
US7034442B2Apr 25, 2006
Electro-optical device, method of manufacturing the same, and electronic instrument
SEIKO EPSON CORP7 citations74
US5488591AJan 30, 1996
Improved magneto-optical recording apparatus for digital signal information
SEIKO EPSON CORP17 citations74
NEC CORP
3 patentsUS5854999ADec 29, 1998
Method and system for speech recognition with compensation for variations in the speech environment
NEC CORP35 citations93
US6112173AAug 29, 2000
Pattern recognition device using tree structure data
NEC CORP11 citations74
US5812739ASep 22, 1998
Speech recognition system and speech recognition method with reduced response time for recognition
NEC CORP7 citations74
NAT SEMICONDUCTOR CORP
3 patentsHIRAYAMA HIROSHI
2 patentsTOYO ENGINEERING CORP
2 patentsHITACHI CAR ENG CO LTD
1 patentNIPPON SOKEN
1 patentFUJI VALVE CO
1 patentMITSUI TOATSU CHEMICALS
1 patentTAKADA MASANORI
1 patentKAWAKAMI NORIHIKO
1 patentMORI HAJIME
1 patentShowing the top 50 of 106 patents by PatentIndex Score.