Inventor
YAMADA YOSHIHIKO
JP67 patents
⚠️ This page may combine multiple inventors who share the name “YAMADA YOSHIHIKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
UNISIA JECS CORP
11 patentsUS5924334AJul 20, 1999
Device for moving cam relative to its driving shaft
UNISIA JECS CORP60 citations96
US5501186AMar 26, 1996
Engine valve control mechanism
UNISIA JECS CORP63 citations96
US5365896ANov 22, 1994
Cam shaft assembly for use in internal combustion engine
UNISIA JECS CORP56 citations96
US5988125ANov 23, 1999
Variable valve actuation apparatus for engine
UNISIA JECS CORP58 citations95
US6340010B1Jan 22, 2002
Valve operating device for internal combustion engine with variable valve timing and valve-lift characteristic mechanism
UNISIA JECS CORP40 citations93
US6123053ASep 26, 2000
Variable valve actuation apparatus for internal combustion engines
UNISIA JECS CORP38 citations93
US5645020AJul 8, 1997
CAM assembly installation in engine
UNISIA JECS CORP30 citations93
US6260523B1Jul 17, 2001
Variable-valve-actuation apparatus for internal combustion engine
UNISIA JECS CORP33 citations92
US6305336B1Oct 23, 2001
Electromagnetic driving device of engine valve for internal combustion engine
UNISIA JECS CORP29 citations90
US6345595B2Feb 12, 2002
Control apparatus for variably operated engine valve mechanism of internal combustion engine
UNISIA JECS CORP12 citations74
US6568361B2May 27, 2003
Valve operating device for internal combustion engines
UNISIA JECS CORP6 citations62
NISSAN MOTOR
8 patentsUS6055949AMay 2, 2000
Variable valve actuator apparatus
NISSAN MOTOR35 citations93
US6041746AMar 28, 2000
Variable valve actuation apparatus
NISSAN MOTOR42 citations93
US6497206B2Dec 24, 2002
Engine with two cylinder banks each with a valve operating device enabling variation of valve timing and valve lift characteristic
NISSAN MOTOR13 citations74
US6098580AAug 8, 2000
Variable valve actuator apparatus
NISSAN MOTOR2 citations63
US5931129AAug 3, 1999
Valve-operating device for engine with two banks and variable valve timing and working angle mechanism
NISSAN MOTOR3 citations63
US10400668B2Sep 3, 2019
Actuator device for variable compression ratio internal combustion engine
NISSAN MOTOR1 citations62
US10400666B2Sep 3, 2019
Variable compression ratio mechanism for internal combustion engine
NISSAN MOTOR1 citations62
US7032551B2Apr 25, 2006
Adjusting mechanism adjusting method of valve-lift amount of internal combustion engine
NISSAN MOTOR4 citations62
HITACHI LTD
8 patentsUS8006658B2Aug 30, 2011
Variable valve actuation apparatus of internal combustion engine
HITACHI LTD11 citations84
US7600496B2Oct 13, 2009
Valve operating apparatus for internal combustion engine
HITACHI LTD8 citations84
US7047921B2May 23, 2006
Variable-valve-actuation apparatus for internal combustion engine
HITACHI LTD5 citations74
US7484485B2Feb 3, 2009
Variable-valve-actuation apparatus for internal combustion engine
HITACHI LTD4 citations63
US7401581B2Jul 22, 2008
Variable valve apparatus for internal combustion engine
HITACHI LTD5 citations63
US7311070B2Dec 25, 2007
Variable valve system of internal combustion engine and method of assembling same
HITACHI LTD3 citations63
US7497192B2Mar 3, 2009
Variable valve system with control shaft actuating mechanism
HITACHI LTD2 citations62
US6874456B2Apr 5, 2005
Valve operating apparatus of internal combustion engines
HITACHI LTD6 citations61
DAIFUKU KK
3 patentsATSUGI UNISIA CORP
3 patentsHITACHI AUTOMOTIVE SYSTEMS LTD
3 patentsUS9797307B2Oct 24, 2017
Actuator of variable compression ratio mechanism and actuator of link mechanism
HITACHI AUTOMOTIVE SYSTEMS LTD12 citations83
US9482161B2Nov 1, 2016
Actuator of link mechanism for internal combustion engine and actuator for variable compression ratio mechanism
HITACHI AUTOMOTIVE SYSTEMS LTD14 citations83
US10883421B2Jan 5, 2021
Actuator of variable compression ratio mechanism and actuator of link mechanism
HITACHI AUTOMOTIVE SYSTEMS LTD5 citations72
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD
3 patentsUS6792614B1Sep 14, 2004
Optical disk apparatus and method of installing its spindle motor
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD18 citations83
US6745154B2Jun 1, 2004
Remote diagnosis method and system, and portable information processor therefor
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD10 citations68
US6050515AApr 18, 2000
Magnetic tape wind-up device
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD6 citations62
US HEALTH
2 patentsCANON KK
2 patentsKURARAY CO
1 patentTOYODA MACHINE WORKS LTD
1 patentUNISIA CORP
1 patentMUKAI HIDEO
1 patentTOYODA KOKI KABUSHIKI KAISJA
1 patentFUJI PHOTO FILM CO LTD
1 patentJTEKT CORP
1 patentShowing the top 50 of 67 patents by PatentIndex Score.