Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5136404 | Liquid crystal writing slate with improved light-transmission retention | John F. Harris, Gary S. Silverman | 1992-08-04 |
| 5116528 | Light modulating material including liquid crystalline material | Patrick W. Mullen | 1992-05-26 |
| 5117297 | Liquid crystal writing slate with DC imaging system | John F. Harris, Gary S. Silverman | 1992-05-26 |
| 5115330 | Liquid crystal writing slate | John F. Harris, Gary S. Silverman, Richard A. Baumann | 1992-05-19 |
| 5111316 | Liquid crystal writing state | John F. Harris, Gary S. Silverman, Richard A. Baumann | 1992-05-05 |
| 5087387 | Light modulating material and method for preparing same | Patrick W. Mullen | 1992-02-11 |
| 4888126 | Light modulating material and method for preparing same | Patrick W. Mullen | 1989-12-19 |