Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4828744 | Borate solution soluble polyvinyl alcohol films | Edward J. Kaufmann | 1989-05-09 |
| 4801636 | Rinse soluble polymer film composition for wash additives | William L. Smith, Edward J. Kaufmann | 1989-01-31 |