Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4814420 | Detecting the stoichiometric end point of phosgenation reactions | Daniel J. Brunelle, Thomas Gerard Shannon, Paul William Buckley, James Manio Silva | 1989-03-21 |
| 4810813 | Method for making reaction products of phosgene and dihydric phenol with stable suspension of dihydric phenol, alkali metal hydroxide and water | James Manio Silva, Thomas Joseph Fyvie | 1989-03-07 |