Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5552244 | Reversible high energy capacity metal-sulfur battery and method of making same | Eric Griffin | 1996-09-03 |
| 5506072 | Reversible high energy capacity metal-sulfur battery and method of making same | Eric Griffin | 1996-04-09 |
| 5408990 | Solar energy collection panel assembly | John G. Freeberg, Colin G. Harris, Richard L. Stover | 1995-04-25 |
| 5191875 | High efficiency solar boiler | Dale G. Hamreus | 1993-03-09 |
| 4836761 | Rotary engine with a pair of piston assemblies and shuttle valves | — | 1989-06-06 |