Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877697 | Color filter array for liquid crystal display device | Hansjoerg Vollmann, George S. K. Wong | 1989-10-31 |
| 4869993 | Optical brightener containing positive working color proofing system | Wahib Farahat, Richard L. Shadrach | 1989-09-26 |