Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6730638 | Low ash, low phosphorus and low sulfur engine oils for internal combustion engines | Liehpao O. Farng, Willie Givens, Douglas E. Deckman, William H. Buck | 2004-05-04 |
| 6713438 | High performance engine oil | David J. Baillargeon, Raymond John Bergstra, William L. Maxwell, G. James Johnston, Robert A. Pache | 2004-03-30 |