Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10763528 | Operation of a fuel cell stack to prevent low oxygen concentrations in a surrounding enclosed space | Jeffrey J. Gagliardo | 2020-09-01 |
| 9880226 | Estimating coolant conductivity in a multi-voltage fuel cell system without disconnecting contactors | — | 2018-01-30 |
| 9434258 | Power converter with diagnostic unit power supply output | Joseph Berg, John W. Meyer, III, Wesley O. Hamilton | 2016-09-06 |
| 9068922 | Estimating coolant conductivity in a multi-voltage fuel cell system | — | 2015-06-30 |
| 9048475 | Method for the detection of fuel cell system short circuits | — | 2015-06-02 |
| 8828616 | Life extension of PEM fuel cell using startup method | Clark G. Hochgraf, Paul Taichiang Yu, Frederick T. Wagner | 2014-09-09 |
| 8450965 | Stack-powered fuel cell monitoring device with prioritized arbitration | David D. Rea, Michael F. Zawisa, Kenneth L. Kaye | 2013-05-28 |
| 8372553 | Fuel cell voltage unit for detecting a failed plate connection | Hartmut Stengelin, Bernhard Baaser, Michael F. Zawisa | 2013-02-12 |
| 7968240 | System and method for shorting a fuel cell stack | Clark G. Hochgraf, Matthew K. Hortop, Balasubramanian Lakshmanan | 2011-06-28 |
| 7935449 | PTC element as a self regulating start resistor for a fuel cell stack | Benno Andreas-Schott, Glenn W. Skala, Jeffrey A. Rock, Balsu Lakshmanan, Michael Murphy | 2011-05-03 |
| 7687174 | Optical fuel cell stack cell voltage monitor | Glenn W. Skala | 2010-03-30 |
| 7421356 | Method and apparatus for measurement of fuel cell high frequency resistance in the presence of large undesirable signals | David D. Rea, Kenneth L. Kaye, Michael F. Zawisa, Clark G. Hochgraf | 2008-09-02 |
| 6455166 | Metallic substrates for high temperature superconductors | Thomas G. Truchan, Dean J. Miller, Kenneth C. Goretta, Uthamalingam Balachandran | 2002-09-24 |
| 6359266 | Flicker free fuser control | Daniel B. Little | 2002-03-19 |
| D351803 | pH pen case design | — | 1994-10-25 |