Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5531105 | Method and system for determining engine oil consumption | Dick Y. Leong, Alex D. Colvin | 1996-07-02 |
| 5129257 | System for measuring engine exhaust constituents | Alex D. Colvin, Dick Y. Leong | 1992-07-14 |
| 5091647 | Method and apparatus for measuring the thickness of a layer on a substrate | Roscoe O. Carter, III, Dennis Schuetzle, Michael John DeCello | 1992-02-25 |