Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883714 | Ink compositions and preparation | Kenneth R. Barton, Melvin A. Caldwell | 1989-11-28 |
| 4847316 | Aqueous dispersion blends of polyesters and polyurethane materials and printing inks therefrom | Martin Frederick Schick, William C. Hickman, Gary T. Clark | 1989-07-11 |