Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6426586 | Contact glass composition for use in spark plugs | Ching T. Young, Duane L. Schreiner, Harold E. Dunfee, Ralph Frederick, Jeff A. Goldacker | 2002-07-30 |
| 4387359 | Titania oxygen sensor with chrome oxide compensator | Tseng-Ying Tien, David Charles Weber | 1983-06-07 |
| 4377801 | Oxygen sensor for detecting the oxygen content of an internal combustion engine exhaust gas system | David Charles Weber, Alan H. Bilger | 1983-03-22 |