Issued Patents 1982
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4359398 | Liquid crystal compositions with novel tris-azo dichroic dyes | Siegfried Aftergut | 1982-11-16 |
| 4356102 | Dichroic liquid crystal compositions containing anthraquinone-based dyes | Sigfried Aftergut | 1982-10-26 |
| 4354740 | Surface alignment process for liquid crystal displays | — | 1982-10-19 |
| 4350603 | Novel tris-azo dyes and liquid crystal compositions made therewith | Siegfried Aftergut | 1982-09-21 |