Issued Patents All Time
Showing 76–89 of 89 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5617823 | Spark-ignited reciprocating piston engine having a subdivided combustion chamber | Karl H. Hellmann, Gary W. Rogers, Ulrich Hilger | 1997-04-08 |
| 5611300 | Floating piston, piston-valve engine | — | 1997-03-18 |
| 5609131 | Multi-stage combustion engine | Karl H. Hellman | 1997-03-11 |
| 5579640 | Accumulator engine | Karl H. Hellman | 1996-12-03 |
| 5562079 | Low-temperature, near-adiabatic engine | — | 1996-10-08 |
| 5549087 | Combined cycle engine | Karl H. Hellman | 1996-08-27 |
| 5507144 | Lightweight, safe hydraulic power system and a method of operation thereof | Michael John Safoutin | 1996-04-16 |
| 5505527 | Anti-lock regenerative braking system | Karl H. Hellman, Ronald M. Schaefer | 1996-04-09 |
| 5495912 | Hybrid powertrain vehicle | Karl H. Hellman, Michael John Safoutin | 1996-03-05 |
| 5317148 | IR/ladar scanner | John T. Brooker, Dale E. Bardin, E. Reeves Salby, II | 1994-05-31 |
| 5095758 | Water cut monitoring means and method | Percy T. Cox, Theodore W. Nussbaum | 1992-03-17 |
| 5070725 | Water-cut monitoring means and method | Percy T. Cox, Theodore W. Nussbaum | 1991-12-10 |
| 4784950 | Expression of factor VII activity in mammalian cells | Frederick S. Hagen, Mark J. Murray, Sharon J. Busby, Kathleen L. Berkner, Margaret Y. Insley +1 more | 1988-11-15 |
| 4606415 | Method and system for detecting and identifying abnormal drilling conditions | Herbert A. Rundell, Thomas M. Williams, Jr. | 1986-08-19 |