Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5550276 | Phosphonic acid derivatives and thionophosphonic acid derivatives | Hermann O. Wirth, Hans-Helmut Friedrich | 1996-08-27 |
| 5320764 | Multifunctional lubricant additives | Hugo Camenzind, Miles J. Hutchings | 1994-06-14 |
| 5037568 | Lubricant compositions | Robert M. O'Neil, Hugo Camenzind, John David Payne | 1991-08-06 |