Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6124225 | Cutting tools and wear resistant articles and material for same | Zhen Huang | 2000-09-26 |
| 4886768 | Toughened ceramics | — | 1989-12-12 |
| 4533647 | Ceramic compositions | — | 1985-08-06 |
| 4387359 | Titania oxygen sensor with chrome oxide compensator | David Charles Weber, Philip R. Woodruff | 1983-06-07 |
| 4186071 | Process for producing oxygen gas sensor elements | Donald J. Romine, Donald C. Davis, Phillip R. Woodruff, Ching T. Young, James D. Bode | 1980-01-29 |