Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6942905 | Buff-free liquid crystal alignment using poly(ionomer) coatings | Rolfe G. Petschek, Daniel J. Harrison | 2005-09-13 |
| 5602662 | Cholesteric liquid crystal devices | Charles Rosenblatt, Karl A. Crandall, Rolfe G. Petschek | 1997-02-11 |
| 5477358 | Chiral nematic liquid crystal display with homeotropic alignment and negative dielectric anisotropy | Charles Rosenblatt, Karl A. Crandall, Rolfe G. Petschek | 1995-12-19 |