Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6840093 | System and method for determining oil grade | Jon E. Kasen | 2005-01-11 |
| 6675635 | System and method for determining oil quality | Jon E. Kasen, Philip H. McCluskey | 2004-01-13 |