Photoactive pentaerythritol derivatives and orientation layers
US6692797B1 · kind B1 · utility
17Cited by
2References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2001 |
| Grant date | Feb 17, 2004 |
| Priority date | — |
| Expiry date | Nov 21, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133788
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Alignment layers for use in liquid crystal devices comprising photoactive pentaerythritol derivatives. 1,2,3,4-trakiskis(8-[2-oxo-2H-1-benzopyran-7-yloxy]octanoyloxy)pentaerythritol is but one example.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.