Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5792732 | Lubricants with linear alkaryl overbased detergents | Tze-Chi Jao, Ingrid Christiane Denys, Leonard A. Matthews | 1998-08-11 |
| 4954272 | Process for preparing overbased calcium sulfonates | Tze-Chi Jao, Robert Erickson | 1990-09-04 |