Inventor · disambiguated record
Jeffrey A. Rock
Also filed as: ROCK JEFFREY A · ROCK JEFFREY ALLAN
102 granted patents·9 pending applications·1,213 citations·filing 1986–2022
99Inventor score
Files withGEN MOTORS CORP29GM GLOBAL TECH OPERATIONS INC29ROCK JEFFREY A19GM GLOBAL TECH OPERATIONS LLC18OWEJAN JON P3
Top patents by PatentIndex Score
111 records- 0198US6503653B2Stamped bipolar plate for PEM fuel cell stackGEN MOTORS CORP·Filed 2001·Granted Jan 7, 2003·109 cites·20 claims
- 0297US9005847B2Fuel cell fabrication using photopolymer based processesROCK JEFFREY A·Filed 2011·Granted Apr 14, 2015·32 cites·19 claims
- 0397US8524412B2Fuel cell fabrication using photopolymer based processesROCK JEFFREY A·Filed 2012·Granted Sep 3, 2013·32 cites·9 claims
- 0497US8268510B2Fuel cell fabrication using photopolymer based processesROCK JEFFREY A·Filed 2008·Granted Sep 18, 2012·40 cites·10 claims
- 0596US6099984AMirrored serpentine flow channels for fuel cellGEN MOTORS CORP·Filed 1998·Granted Aug 8, 2000·171 cites·3 claims
- 0694US8371587B2Metal bead seal for fuel cell plateGM GLOBAL TECH OPERATIONS INC·Filed 2008·Granted Feb 12, 2013·23 cites·13 claims
- 0793US6358638B1Cold start-up of a PEM fuel cellGEN MOTORS CORP·Filed 2000·Granted Mar 19, 2002·66 cites·12 claims
- 0892US7781087B2Stamped fuel cell bipolar plateGM GLOBAL TECH OPERATIONS INC·Filed 2008·Granted Aug 24, 2010·14 cites·10 claims
- 0992US7718298B2Bifurcation of flow channels in bipolar plate flowfieldsGM GLOBAL TECH OPERATIONS INC·Filed 2007·Granted May 18, 2010·15 cites·14 claims
- 1092US6309773B1Serially-linked serpentine flow channels for PEM fuel cellGEN MOTORS CORP·Filed 1999·Granted Oct 30, 2001·115 cites·6 claims
- 1191US8535845B2Seal for PEM fuel cell plateGM GLOBAL TECH OPERATIONS INC·Filed 2013·Granted Sep 17, 2013·6 cites·12 claims
- 1289US7459227B2Stamped fuel cell bipolar plateGEN MOTORS CORP·Filed 2003·Granted Dec 2, 2008·36 cites·11 claims
- 1389US5342126ATwist lock attachment for a thermal probeGEN MOTORS CORP·Filed 1993·Granted Aug 30, 1994·81 cites·5 claims
- 1488US7687182B2Pressurized coolant for stamped plate fuel cell without diffusion media in the inactive feed regionGM GLOBAL TECH OPERATIONS INC·Filed 2005·Granted Mar 30, 2010·10 cites·4 claims
- 1588US6794068B2Fuel cell stack design and method of operationGEN MOTORS CORP·Filed 2002·Granted Sep 21, 2004·44 cites·22 claims
- 1687US7807316B2Fuel cell stack compression retention system with external springsGM GLOBAL TECH OPERATIONS INC·Filed 2006·Granted Oct 5, 2010·8 cites·10 claims
- 1787US7291414B2Reactant feed for nested stamped plates for a compact fuel cellGEN MOTORS CORP·Filed 2004·Granted Nov 6, 2007·28 cites·17 claims
- 1886US8546064B2Method to produce a fuel cell flowfield with photopolymer wallsROCK JEFFREY A·Filed 2011·Granted Oct 1, 2013·5 cites·20 claims
- 1985US10601063B2Method of manufacturing a fuel cell stackGM GLOBAL TECH OPERATIONS LLC·Filed 2017·Granted Mar 24, 2020·2 cites·20 claims
- 2085US8309274B2Separator plates formed by photopolymer based processesROCK JEFFREY A·Filed 2009·Granted Nov 13, 2012·5 cites·6 claims
- 2184US9379408B2Hemmed fuel cell stack enclosureGM GLOBAL TECH OPERATIONS INC·Filed 2013·Granted Jun 28, 2016·4 cites·25 claims
- 2284US7112385B2Flow restrictors in fuel cell flow-fieldGEN MOTORS CORP·Filed 2003·Granted Sep 26, 2006·20 cites·8 claims
- 2384US4756289ASelf-contained fuel pressure regulatorGEN MOTORS CORP·Filed 1986·Granted Jul 12, 1988·35 cites·1 claims
- 2483US8329347B2Fuel cell with microtruss water vapor transport deviceROCK JEFFREY A·Filed 2010·Granted Dec 11, 2012·3 cites·13 claims
- 2583US6699614B2Converging/diverging flow channels for fuel cellGEN MOTORS CORP·Filed 2002·Granted Mar 2, 2004·23 cites·3 claims
- 2683US6358642B1Flow channels for fuel cellGEN MOTORS CORP·Filed 1999·Granted Mar 19, 2002·80 cites·10 claims
- 2782US6893756B2Lambda sensing with a fuel cell stackGEN MOTORS CORP·Filed 2002·Granted May 17, 2005·21 cites·39 claims
- 2881US8501364B2Fuel cell bipolar plate exit for improved flow distribution and freeze compatibilityGM GLOBAL TECH OPERATIONS INC·Filed 2013·Granted Aug 6, 2013·2 cites·14 claims
- 2980US12394812B2Fuel cell stack re-compression method and designGM GLOBAL TECH OPERATIONS LLC·Filed 2022·Granted Aug 19, 2025·0 cites·20 claims
- 3080US6893770B2Stamped bipolar plate for PEM fuel cell stackGEN MOTORS CORP·Filed 2002·Granted May 17, 2005·15 cites·30 claims
- 3179US8092957B2Diffusion media formed by photopolymer based processesROCK JEFFREY A·Filed 2009·Granted Jan 10, 2012·3 cites·20 claims
- 3279US7901832B2Bipolar plate with inlet and outlet water management featuresGM GLOBAL TECH OPERATIONS INC·Filed 2008·Granted Mar 8, 2011·3 cites·20 claims
- 3378US9178224B2Sealing design for stamped plate fuel cellsGM GLOBAL TECH OPERATIONS INC·Filed 2013·Granted Nov 3, 2015·2 cites·20 claims
- 3478US9017895B2Dual channel step in fuel cell plateROCK JEFFREY A·Filed 2010·Granted Apr 28, 2015·2 cites·20 claims
- 3578US8795921B2Aligning method for repeating and non-repeating units in a fuel cell stackROCK JEFFREY A·Filed 2010·Granted Aug 5, 2014·2 cites·15 claims
- 3677US7927752B2Individual cell shorting during startup and shutdown using an integrated switchGM GLOBAL TECH OPERATIONS INC·Filed 2007·Granted Apr 19, 2011·3 cites·15 claims
- 3777US6911277B2Device and method to expand operating range of a fuel cell stackGEN MOTORS CORP·Filed 2002·Granted Jun 28, 2005·12 cites·24 claims
- 3876US8580454B2Combined subgasket and membrane supportGM GLOBAL TECH OPERATIONS INC·Filed 2013·Granted Nov 12, 2013·2 cites·13 claims
- 3975US8389177B2Combined subgasket and membrane supportFLY GERALD W·Filed 2008·Granted Mar 5, 2013·2 cites·8 claims
- 4075US8129075B2Bipolar plate header formed featuresOWEJAN JON P·Filed 2008·Granted Mar 6, 2012·2 cites·20 claims
- 4175US6663995B2End plates for a fuel cell stack structureGEN MOTORS CORP·Filed 2002·Granted Dec 16, 2003·12 cites·20 claims
- 4274US7851102B2Fuel cell stack compression retention system using overlapping sheetsGM GLOBAL TECH OPERATIONS INC·Filed 2007·Granted Dec 14, 2010·2 cites·19 claims
- 4374US7618734B2Branched fluid channels for improved fluid flow through fuel cellGEN MOTORS CORP·Filed 2004·Granted Nov 17, 2009·14 cites·20 claims
- 4473US7935449B2PTC element as a self regulating start resistor for a fuel cell stackGM GLOBAL TECH OPERATIONS INC·Filed 2006·Granted May 3, 2011·2 cites·15 claims
- 4573US7794890B2Aligning method for repeating and non-repeating units in a fuel cell stackGM GLOBAL TECH OPERATIONS INC·Filed 2005·Granted Sep 14, 2010·2 cites·18 claims
- 4672US7972741B2Diffusion media for seal support for improved fuel cell designGM GLOBAL TECH OPERATIONS INC·Filed 2006·Granted Jul 5, 2011·2 cites·24 claims
- 4771US7823277B2Pre-nesting of the active area on plates to reduce thickness variationGM GLOBAL TECH OPERATIONS INC·Filed 2008·Granted Nov 2, 2010·3 cites·12 claims
- 4871US7709120B2Method to maximize fuel cell stack shorting resistanceGM GLOBAL TECH OPERATIONS INC·Filed 2007·Granted May 4, 2010·1 cites·13 claims
- 4971US7081316B2Bipolar plate assembly having transverse legsGEN MOTORS CORP·Filed 2003·Granted Jul 25, 2006·10 cites·35 claims
- 5070US9705139B2Printed multi-function seals for fuel cellsGM GLOBAL TECH OPERATIONS LLC·Filed 2014·Granted Jul 11, 2017·1 cites·19 claims
Showing the top 50 of 111 patent records by PatentIndex Score.
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