Issued Patents 1982
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4354015 | Phosphonium bicarbonate catalysts for promoting reaction of epoxides with phenols | Lawrence G. Duquette, James L. Bertram | 1982-10-12 |
| 4354028 | Piperazine derivatives | John C. Martin, Lawrence G. Duquette | 1982-10-12 |
| 4352918 | Process for preparing epoxy resins having improved physical properties when cured using quaternary phosphonium catalysts | Ross C. Whiteside, Jr., Adolphus V. Gist | 1982-10-05 |
| 4340761 | Preparation of phosphonium phenoxide salts | Wanda S. Smith | 1982-07-20 |
| 4329480 | Cyclic meta-sulfonium-phenoxide zwitterions | Donald L. Schmidt | 1982-05-11 |
| 4310708 | Phosphonium catalysts for hydroxyalkylation of phenols or thiophenols | Paul E. Strege | 1982-01-12 |