Issued Patents 1989
Showing 1–1 of 1 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, Haven S. Kesling, Jr. | 1989-11-28 |
Showing 1–1 of 1 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, Haven S. Kesling, Jr. | 1989-11-28 |