Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883908 | Process for the preparation of aromatic isocyanates from dialkyl ureas using an organic sulfonic acid promoter | Edward T. Shawl, Frank J. Liotta, Jr. | 1989-11-28 |
| 4873364 | Process for the preparation of methylene diphenylene diisocyanates and polymethylene polyphenylene poly (diisocyanates) | Edward T. Shawl | 1989-10-10 |
| 4871871 | Process for the preparation of aromatic mono- and polyisocyanates | Edward T. Shawl | 1989-10-03 |
| 4853462 | Preparation of discrete particles of polyalkylene carbonate | Donald E. Hostetler, Michael J. Cannarsa, Hsiang-Ning Sun | 1989-08-01 |
| 4851507 | Melt processable aliphatic polycarbonate terpolymers | Michael J. Cannarsa, Hsiang-Ning Sun | 1989-07-25 |
| 4833036 | Polyalkylene carbonate hot melt adhesive | Michael J. Cannarsa, Donald E. Hostetler, Terence Cooper, Hsiang-Ning Sun | 1989-05-23 |