Inventor
TSURUTA SEIJI
JP27 patents
⚠️ This page may combine multiple inventors who share the name “TSURUTA SEIJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
UNISIA JECS CORP
12 patentsUS6263843B1Jul 24, 2001
Valve timing control device of internal combustion engine
UNISIA JECS CORP27 citations92
US6032624AMar 7, 2000
Engine valve actuating devices
UNISIA JECS CORP23 citations92
US5592909AJan 14, 1997
Camshaft phase changing device
UNISIA JECS CORP27 citations92
US6467443B1Oct 22, 2002
Valve operating device of internal combustion engine
UNISIA JECS CORP22 citations91
US6032643AMar 7, 2000
Decompression engine brake device of automotive internal combustion engine
UNISIA JECS CORP34 citations91
US5816216AOct 6, 1998
Decompression brake device of automotive internal combustion engine
UNISIA JECS CORP50 citations91
US5647319AJul 15, 1997
Decompression braking apparatus for diesel engine
UNISIA JECS CORP19 citations82
US5918367AJul 6, 1999
Method of producing valve lifter
UNISIA JECS CORP8 citations73
US5794576AAug 18, 1998
Engine cylinder valve controlling apparatus
UNISIA JECS CORP12 citations72
US5655499AAug 12, 1997
Decompression braking apparatus for diesel engine
UNISIA JECS CORP15 citations72
US5749341AMay 12, 1998
Valve lifter for internal combustion engines
UNISIA JECS CORP10 citations70
US6397806B2Jun 4, 2002
Engine valve assembly for internal combustion engine
UNISIA JECS CORP11 citations68
ATSUGI UNISIA CORP
3 patentsUS5203290AApr 20, 1993
Intake and/or exhaust-valve timing control sytem for internal combustion engine
ATSUGI UNISIA CORP27 citations92
US5058539AOct 22, 1991
Valve timing adjusting system for internal combustion engine
ATSUGI UNISIA CORP42 citations92
US5205248AApr 27, 1993
Intake- and/or exhaust-valve timing control system for internal combustion engines
ATSUGI UNISIA CORP5 citations63
HITACHI AUTOMOTIVE SYSTEMS LTD
3 patentsUS9470118B2Oct 18, 2016
Valve timing control apparatus for internal combustion engine and controller for valve timing control apparatus
HITACHI AUTOMOTIVE SYSTEMS LTD2 citations63
US9068626B2Jun 30, 2015
Balancer device of internal combustion engine
HITACHI AUTOMOTIVE SYSTEMS LTD2 citations60
US9874116B2Jan 23, 2018
Valve-timing control device for internal combustion engine
HITACHI AUTOMOTIVE SYSTEMS LTD0 citations42