Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877901 | Process for synthesizing N,N'-dithiobis(sulfonamides) | Niranjan V. Shah, Steven Ryba | 1989-10-31 |
| 4820780 | Modification of rubber with N-chlorothio-sulfonamide | — | 1989-04-11 |