Issued Patents All Time
Showing 26–30 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871871 | Process for the preparation of aromatic mono- and polyisocyanates | Haven S. Kesling, Jr. | 1989-10-03 |
| 4543419 | Process for the preparation of diphenylmethane dicarbamates and polymethylene polyphenyl carbamates | — | 1985-09-24 |
| 4230877 | Method for increasing the 4,4'dicarbamate isomer of the diphenylmethane dicarbamates during preparation thereof | Gerald A. Bullano | 1980-10-28 |
| 4202986 | Preparation of diphenylmethane dicarbamates and polymethylene polyphenyl carbamates with Lewis acid catalysts intercalated in graphite | — | 1980-05-13 |
| T994004 | Process for the preparation of diphenylmethane dicarbamates and polymethylene polyphenyl carbamates using solid acid catalysts | — | 1980-05-06 |