Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4879053 | Process for preparing overbased calcium sulfonates | Leonard A. Matthews, William J. Powers, III, Henry M. Przybyla, Joanne R. Whittle | 1989-11-07 |
JP
Jerry C. Perciful
Overall (1989): #97,513 of 140,708Top 70%
1
Patents 1989