Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4717788 | Method for producing thermoelectric elements | Lewis H. Gnau, deceased, June E. Gnau, executrix | 1988-01-05 |
| 4717789 | Thermoelectric elements | Lewis H. Gnau, deceased, June E. Gnau, executrix | 1988-01-05 |
| 4575493 | Low expansion, multiband transmitting glasses and glass-ceramics | — | 1986-03-11 |
| 4292083 | High temperature, low expansion, corrosion resistant ceramic and gas turbine | — | 1981-09-29 |
| 4284664 | Fiber reinforced ceramics produced without pressing or sintering using a slurry comprising a silicate and a powdered ceramic | — | 1981-08-18 |