Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6264826 | Base stock lube oil manufacturing process | Phil Winslow, James N. Ziemer | 2001-07-24 |
| 5993644 | Base stock lube oil manufacturing process | Phil Winslow, James N. Ziemer | 1999-11-30 |