Inventor · disambiguated record
Ivan D. Chapman
Also filed as: CHAPMAN IVAN D · CHAPMAN IVAN DARYL
8 granted patents·5 pending applications·17 citations·filing 2004–2016
80Inventor score
Files withGM GLOBAL TECH OPERATIONS INC5GM GLOBAL TECH OPERATIONS LLC5CHAPMAN IVAN D1CHAPMAN IVAN DARYL1ROCK JEFFREY A1
Top patents by PatentIndex Score
13 records- 0187US10153499B2Unsymmetric compact metal seal beads for fuel cell stackGM GLOBAL TECH OPERATIONS LLC·Filed 2015·Granted Dec 11, 2018·3 cites·17 claims
- 0282US7820335B2Plate for a fuel cell assemblyGM GLOBAL TECH OPERATIONS INC·Filed 2007·Granted Oct 26, 2010·5 cites·6 claims
- 0379US8778551B2Fluid flow pulsing for increased stability in PEM fuel cellCHAPMAN IVAN DARYL·Filed 2008·Granted Jul 15, 2014·5 cites·19 claims
- 0478US8795921B2Aligning method for repeating and non-repeating units in a fuel cell stackROCK JEFFREY A·Filed 2010·Granted Aug 5, 2014·2 cites·15 claims
- 0573US7794890B2Aligning 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
- 0653US2016049668A1Fuel cell with improved reactant distributionGM GLOBAL TECH OPERATIONS INC·Filed 2014·Application pending·0 cites
- 0752US10547064B2Tunnel cross section for more uniformed contact pressure distribution on metal bead seal at the intersection between bead and tunnelGM GLOBAL TECH OPERATIONS LLC·Filed 2016·Granted Jan 28, 2020·0 cites·17 claims
- 0852US10211473B2Reduction of pressure variation with stamped embossment at bead neighborsGM GLOBAL TECH OPERATIONS LLC·Filed 2016·Granted Feb 19, 2019·0 cites·18 claims
- 0948US10522847B2Seal contact pressure uniformity by inserting connection at bead cornersGM GLOBAL TECH OPERATIONS LLC·Filed 2016·Granted Dec 31, 2019·0 cites·13 claims
- 1048US2008241632A1Use of Hydrophilic Treatment in a Water Vapor Transfer DeviceGM GLOBAL TECH OPERATIONS INC·Filed 2007·Application pending·0 cites
- 1147US2005260463A1Fluid flow pulsing for increased stability in PEM fuel cellCHAPMAN IVAN D·Filed 2004·Application pending·0 cites
- 1244US2008152957A1Non-functional fuel cell for fuel cell stackGM GLOBAL TECH OPERATIONS INC·Filed 2006·Application pending·0 cites
- 1340US2018123141A1Metal bead with stamped compression limiterGM GLOBAL TECH OPERATIONS LLC·Filed 2016·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →