Inventor
Clark G. Hochgraf
Inventor
Rochester, NY, US
Overview
12→
Patents
1999–2014
Patent span
General tagging of new technological developments
Primary field (CPC Y)
Patents· 12 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
Y02Eprimary
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution34%
H01MProcesses or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy28%
Y02TClimate change mitigation technologies related to transportation10%
B60LPropulsion of electrically-propelled vehicles7%
H02JElectric power networks7%
G01RMeasuring electric variables3%
H02HEmergency protective circuit arrangements3%
H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems3%
Y02PClimate change mitigation technologies in the production or processing of goods3%
PatentTitleYear
8,828,616'Life extension of PEM fuel cell using startup method'20148,486,575'Passive hydrogen vent for a fuel cell'20137,972,749'Low voltage power tap on high voltage stack'20117,968,240'System and method for shorting a fuel cell stack'20117,883,809'Rapid startup of a fuel cell power module using motor drive'20117,442,456'Current control for parallel fuel cell stacks'20087,421,356'Method and apparatus for measurement of fuel cell high frequency resistance in the presence of large undesirable signals'20087,132,191'Addressing one MEA failure mode by controlling MEA catalyst layer overlap'20066,794,844'Method and system for fuel cell control'20046,603,290'Anti-islanding detection scheme for distributed power generation'20036,072,707'High voltage modular inverter'20005,905,367'Power inverter apparatus using a transformer with its primary winding connected the source end and a secondary winding connected to the load end of an AC power line to insert series compensation'1999Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1999Based in Monroeville, PA, US· patent location history
2000Based in Levonia, MI, US· patent location history
2003–2004Patents assigned to VISTEON GLOBAL TECH INC (2)· patent assignee history
2003–2004Based in Livonia, MI, US· patent location history
2006–2008Patents assigned to GEN MOTORS CORP (2)· patent assignee history
2006–2013Based in Rochester, NY, US· patent location history
2008–2014Patents assigned to GM GLOBAL TECH OPERATIONS INC (6)· patent assignee history
2011–2014Based in Honeoye Falls, NY, US· patent location history
2013–2014Patents assigned to HOCHGRAF CLARK G (2)· patent assignee history
2013Patents assigned to EDWARDS LEROY M (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| GM GLOBAL TECH OPERATIONS INC | 6 | 2008–2014 |
| GEN MOTORS CORP | 2 | 2006–2008 |
| HOCHGRAF CLARK Gself | 2 | 2013–2014 |
| VISTEON GLOBAL TECH INC | 2 | 2003–2004 |
| EDWARDS LEROY M | 1 | 2013 |
Locations
| Location | Patents | Span |
|---|---|---|
| Rochester, New York, US | 6 | 2006–2013 |
| Honeoye Falls, New York, US | 2 | 2011–2014 |
| Livonia, MI, US | 2 | 2003–2004 |
| Levonia, MI, US | 1 | 2000 |
| Monroeville, Pennsylvania, US | 1 | 1999 |