Inventor · disambiguated record
Mark J. Spath
Also filed as: SPATH MARK J · SPATH MARK JAMES
38 granted patents·1 pending application·1,172 citations·filing 1987–2008
98Inventor score
Top patents by PatentIndex Score
39 records- 0198US7882814B2Inner arm stop for a switchable rocker armDELPHI TECH INC·Filed 2008·Granted Feb 8, 2011·59 cites·18 claims
- 0298US6513470B1Deactivation hydraulic valve lifterDELPHI TECH INC·Filed 2000·Granted Feb 4, 2003·83 cites·25 claims
- 0397US6325030B1Roller finger follower for valve deactivationDELPHI TECH INC·Filed 2000·Granted Dec 4, 2001·79 cites·15 claims
- 0497US6321705B1Roller finger follower for valve deactivationDELPHI TECH INC·Filed 2000·Granted Nov 27, 2001·66 cites·19 claims
- 0596US7673601B2Valve lifter assembly for selectively deactivating a cylinderDELPHI TECH INC·Filed 2007·Granted Mar 9, 2010·21 cites·19 claims
- 0696US5090364ATwo-step valve operating mechanismGEN MOTORS CORP·Filed 1990·Granted Feb 25, 1992·96 cites·17 claims
- 0795US6578535B2Valve-deactivating lifterDELPHI TECH INC·Filed 2002·Granted Jun 17, 2003·67 cites·19 claims
- 0894US6814040B2Deactivation roller hydraulic valve lifterDELPHI TECH INC·Filed 2003·Granted Nov 9, 2004·26 cites·5 claims
- 0994US5934232AEngine valve lift mechanismGEN MOTORS CORP·Filed 1998·Granted Aug 10, 1999·77 cites·17 claims
- 1093US6668776B2Deactivation roller hydraulic valve lifterDELPHI TECH INC·Filed 2003·Granted Dec 30, 2003·26 cites·23 claims
- 1193US6497207B2Deactivation roller hydraulic valve lifterDELPHI TECH INC·Filed 2001·Granted Dec 24, 2002·56 cites·9 claims
- 1293US5431133ALow mass two-step valve lifterGEN MOTORS CORP·Filed 1994·Granted Jul 11, 1995·77 cites·18 claims
- 1393US5398648ACompact valve liftersGEN MOTORS CORP·Filed 1994·Granted Mar 21, 1995·65 cites·11 claims
- 1493US5361733ACompact valve liftersGEN MOTORS CORP·Filed 1993·Granted Nov 8, 1994·67 cites·7 claims
- 1591US5709180ANarrow cam two-step lifterGEN MOTORS CORP·Filed 1997·Granted Jan 20, 1998·56 cites·7 claims
- 1688US7007651B2Anti-rotation guide for a deactivation hydraulic valve lifterDELPHI TECH INC·Filed 2005·Granted Mar 7, 2006·16 cites·19 claims
- 1787US7395792B2Deactivation roller hydraulic valve lifterDELPHI TECH INC·Filed 2006·Granted Jul 8, 2008·6 cites·33 claims
- 1887US7308879B2Deactivation roller hydraulic valve lifterDELPHI TECH INC·Filed 2006·Granted Dec 18, 2007·6 cites·39 claims
- 1987US7296548B2Deactivation roller hydraulic valve lifterDELPHI TECH INC·Filed 2006·Granted Nov 20, 2007·6 cites·8 claims
- 2086US6866014B2Anti-rotation guide for a deactivation hydraulic valve lifterDELPHI TECH INC·Filed 2003·Granted Mar 15, 2005·27 cites·5 claims
- 2185US7117833B2Readily-fillable hydraulic valve lifter assemblyDELPHI TECH INC·Filed 2004·Granted Oct 10, 2006·19 cites·12 claims
- 2283US7104232B2Deactivation roller hydraulic valve lifterDELPHI TECH INC·Filed 2004·Granted Sep 12, 2006·12 cites·12 claims
- 2382US6802288B2Deactivation hydraulic valve lifter having a pressurized oil grooveDELPHI TECH INC·Filed 2003·Granted Oct 12, 2004·16 cites·5 claims
- 2481US7455040B2Hydraulic circuit for switchable cam followersDELPHI TECH INC·Filed 2006·Granted Nov 25, 2008·7 cites·25 claims
- 2581US7263956B2Valve lifter assembly for selectively deactivating a cylinderDELPHI TECH INC·Filed 2002·Granted Sep 4, 2007·21 cites·8 claims
- 2678US7757648B2Switchable valve train memberDELPHI TECH INC·Filed 2008·Granted Jul 20, 2010·3 cites·31 claims
- 2778US6976463B2Anti-rotation deactivation valve lifterDELPHI TECH INC·Filed 2004·Granted Dec 20, 2005·15 cites·12 claims
- 2877US6748914B2Refillable metering valve for hydraulic valve liftersDELPHI TECH INC·Filed 2002·Granted Jun 15, 2004·16 cites·16 claims
- 2974US6920857B2Deactivation hydraulic valve lifter having a pressurized oil grooveDELPHI TECH INC·Filed 2004·Granted Jul 26, 2005·11 cites·3 claims
- 3068US4718785ACompliant head loading mechanism for thermal printerEASTMAN KODAK CO·Filed 1987·Granted Jan 12, 1988·15 cites·5 claims
- 3163US5606939AValve actuation assemblyGEN MOTORS CORP·Filed 1995·Granted Mar 4, 1997·18 cites·5 claims
- 3260US7610887B2Valve-deactivating hydraulic lifter having a contoured pin housing bottom surfaceDELPHI TECH INC·Filed 2007·Granted Nov 3, 2009·2 cites·6 claims
- 3359US7246585B2Valve-deactivating hydraulic lifter having a vented internal lost motion springDELPHI TECH INC·Filed 2006·Granted Jul 24, 2007·2 cites·14 claims
- 3453US7409941B2Valve-deactivating hydraulic lifter having a vented internal lost motion springDELPHI TECH INC·Filed 2006·Granted Aug 12, 2008·1 cites·15 claims
- 3552US4948737ACartridge for properly receiving test elementsEASTMAN KODAK CO·Filed 1989·Granted Aug 14, 1990·14 cites·2 claims
- 3651US6021751AHydraulic valve lifter with lashGEN MOTORS CORP·Filed 1999·Granted Feb 8, 2000·11 cites·12 claims
- 3747US7243629B2Hydraulic valve lifter assemblyDELPHI TECH INC·Filed 2006·Granted Jul 17, 2007·0 cites·6 claims
- 3841US6039018AHydraulic lash adjuster with plunger inner control ringGEN MOTORS CORP·Filed 1999·Granted Mar 21, 2000·7 cites·7 claims
- 3936US2005081811A1Anti-rotation deactivation valve lifterFiled 2003·Application pending·0 cites
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