Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863980 | Organophilic modified polymers | Jack C. Cowan, Victor M. Granquist | 1989-09-05 |
| 4853465 | Organophilic polyphenolic acid adducts | Jack C. Cowan, Victor M. Granquist | 1989-08-01 |
| 4843048 | Organophilic clay compositions | Victor M. Granquist, Jack C. Cowan | 1989-06-27 |