Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12100872 | Fuel cells configured to deliver bi-polar high voltage DC power | — | 2024-09-24 |
| 12065256 | Fuel cell powered aircraft with a cathode convertible between oxygen and air and method for use thereof | — | 2024-08-20 |
| 11866169 | System and method for supplying passively filtered ram air to a hydrogen fuel cell of a UAV | — | 2024-01-09 |
| 11745881 | Fuel cell stack array | — | 2023-09-05 |
| 11749820 | Fuel cell cathode air pressure management systems | — | 2023-09-05 |
| 11742500 | Structural gaseous material storage tank | William Ben Johns | 2023-08-29 |
| 11685536 | Fuel cells configured to deliver bi-polar high voltage DC power | — | 2023-06-27 |
| 11453514 | Autonomous hydrogen refueling | — | 2022-09-27 |
| 11414199 | Fuel cell powered line-replaceable thrust module | John Richard McCullough | 2022-08-16 |
| 11365012 | Fuel cell powered aircraft with a cathode convertible between oxygen and air and method for use thereof | — | 2022-06-21 |
| 11152631 | Air-cooled fuel-cell freeze-protection system | — | 2021-10-19 |
| 11142447 | Mobile autonomous hydrogen refueling station | — | 2021-10-12 |
| 8877397 | Method to thaw frozen coolant in a fuel cell system | Joseph C. Gerzseny, Aaron Rogahn, Matthew C. Kirklin | 2014-11-04 |
| 8617752 | Cold start compressor control and mechanization in a fuel cell system | Bruce J. Clingerman, Matthew C. Kirklin | 2013-12-31 |
| 8389170 | Method to detect no coolant flow in a fuel cell system | Joseph C. Gerzseny, Aaron Rogahn, Loren Devries | 2013-03-05 |
| 8277989 | Cathode filter replacement algorithm in a fuel cell system | Matthew C. Kirklin | 2012-10-02 |
| 8057929 | Regenerative compressor motor control for a fuel cell power system | John R Bonkoske | 2011-11-15 |
| 7771883 | Virtual compressor operational parameter measurement and surge detection in a fuel cell system | Peter Pospichal | 2010-08-10 |
| 7608353 | Method for detecting compressor surge in a fuel cell system using a mass flow meter | — | 2009-10-27 |
| 7514171 | Cathode transient humidity control in a fuel cell system | Bruce J. Clingerman | 2009-04-07 |
| 7473480 | Low voltage compressor operation for a fuel cell power system | John R Bonkoske, Victor W. Logan | 2009-01-06 |
| 7396604 | Centrifugal compressor surge detection using a bi-directional MFM in a fuel cell system | — | 2008-07-08 |
| 7205058 | Residual stack shutdown energy storage and usage for a fuel cell power system | Mahmoud H. Abd Elhamid, James S. Siepierski | 2007-04-17 |