Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880432 | Process for preparing colored particles and liquid developer compositions thereof | Luke S. Egan, Francoise M. Winnik | 1989-11-14 |
| 4813973 | Modified, water-soluble polymers containing amide groups reacted with xanthydrol and other dyes | Robert M. Borg | 1989-03-21 |