Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4861818 | Method for the preparation of stable aqueous dispersions of polymer beads and the use of these dispersions in photographic elements | Daniel M. Timmerman, Jan J. Priem | 1989-08-29 |
| 4855211 | Polymeric phosphonium mordant and photographic element containing the same | Daniel M. Timmerman, Daniel A. Claeys | 1989-08-08 |
| 4814255 | Mordanting polymers for acid dyes | Luc Vanmaele | 1989-03-21 |