Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4879053 | Process for preparing overbased calcium sulfonates | Leonard A. Matthews, William J. Powers, III, Henry M. Przybyla, Jerry C. Perciful | 1989-11-07 |
| 4604219 | Method of preparing overbased calcium sulfonates | — | 1986-08-05 |
| 4427559 | Method of preparing overbased calcium sulfonates | — | 1984-01-24 |