Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851316 | Liquid toner compositions with amino acids and polyvalent metal complexes as charge control additives | Joseph Chow | 1989-07-25 |
| RE32883 | Quarternary ammonium sulfate or sulfonate charge control agents for electrophotographic developers compatible with viton fuser | — | 1989-03-07 |