Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851532 | Ionene polymeric compositions, their preparation and use | John D. Pera | 1989-07-25 |
| 4801362 | Control of microorganisms in aqueous systems with 1-hydroxymethylpyrazoles | — | 1989-01-31 |