P

Inventor

PIERIK RONALD JAY

US15 patents
⚠️ This page may combine multiple inventors who share the name “PIERIK RONALD JAY”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

GEN MOTORS CORP

5 patents
US5680837AOct 28, 1997

Planetary cam phaser with worm electric actuator

GEN MOTORS CORP122 citations97
US6019076AFeb 1, 2000

Variable valve timing mechanism

GEN MOTORS CORP92 citations95
US5937809AAug 17, 1999

Variable valve timing mechanisms

GEN MOTORS CORP88 citations93
US5680836AOct 28, 1997

Planetary cam phaser with lash compensation

GEN MOTORS CORP53 citations92
US5666931ASep 16, 1997

Integrated engine dilution control

GEN MOTORS CORP23 citations89

GM GLOBAL TECH OPERATIONS INC

4 patents
US7849828B2Dec 14, 2010

Rocker arm assembly

GM GLOBAL TECH OPERATIONS INC9 citations83
US7827944B2Nov 9, 2010

System for controlling the response time of a hydraulic system

GM GLOBAL TECH OPERATIONS INC10 citations83
US8047065B2Nov 1, 2011

Diagnostic system for valve actuation camshaft driven component compensation

GM GLOBAL TECH OPERATIONS INC6 citations62
US7980216B2Jul 19, 2011

Rocker arm assembly having slider roller oil pumping features

GM GLOBAL TECH OPERATIONS INC5 citations61

DELPHI TECH INC

2 patents
US6378474B1Apr 30, 2002

Variable value timing mechanism with crank drive

DELPHI TECH INC24 citations92
US6311659B1Nov 6, 2001

Desmodromic cam driven variable valve timing mechanism

DELPHI TECH INC50 citations92

MARRIOTT CRAIG D

1 patent
US8096275B2Jan 17, 2012

Camshaft having a tuned mass damper

MARRIOTT CRAIG D6 citations71

NEAL TIMOTHY L

1 patent
US8776741B2Jul 15, 2014

Engine assembly including cam phaser assembly aid pin

NEAL TIMOTHY L4 citations66

PIERIK RONALD JAY

1 patent
US8683965B2Apr 1, 2014

Engine assembly including camshaft actuator

PIERIK RONALD JAY2 citations56

CLEVER GLENN E

1 patent
US8448617B2May 28, 2013

Engine including camshaft with partial lobe

CLEVER GLENN E1 citations50