Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6166481 | Anti-carbon fouling spark plug | Daniel Lee Tribble, Robert Scott Ingham | 2000-12-26 |
| 5985473 | Low-temperature barium/lead-free glaze for alumina ceramics | — | 1999-11-16 |
| 5677250 | Low-temperature lead-free glaze for alumina ceramics | — | 1997-10-14 |
| 5518968 | Low-temperature lead-free glaze for alumina ceramics | — | 1996-05-21 |
| 4256497 | Lead-free glaze for alumina bodies | — | 1981-03-17 |