Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 7972749 | Low voltage power tap on high voltage stack | Scott Dewey, Clark G. Hochgraf, Victor W. Logan, David B. Ouwerkerk | 2011-07-05 | $9,243,000 |
| 7820333 | Fuel cell operating method with improved hydrogen and oxygen utilization | Ralf Senner, Michael Cartwright | 2010-10-26 | |
| 7485382 | Parallel stack antifreeze system | Dennis E. Brown, Jason R. Kolodziej | 2009-02-03 | $2,739,000 |
| 7442456 | Current control for parallel fuel cell stacks | Clark G. Hochgraf, Daryl Chapman | 2008-10-28 | $2,337,000 |
| 7087335 | H-infinity control with integrator compensation for anode pressure control in a fuel cell stack | Jason R. Kolodziej | 2006-08-08 | $15,820,000 |
| 7081193 | Multi-stack isolation detection system | Scott Dewey | 2006-07-25 | $18,094,000 |