Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4879199 | Process for preparing encapsulated color toner compositions | Robert J. Gruber, Raymond A. Yourd, III, Paul C. Julien, Steven B. Bolte | 1989-11-07 |
| 4837101 | Negatively charged colored toner compositions | Robert J. Gruber, Ronald J. Koch, Lawrence Floyd, Jr. | 1989-06-06 |