[Indole]naphthopyrans, preparation, compositions and (co)polymer matrices containing them, synthesis intermediates
US6392043B1 · kind B1 · utility
15Cited by
3References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 24, 2000 |
| Grant date | May 21, 2002 |
| Priority date | — |
| Expiry date | Aug 24, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/23
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The object of the present invention is novel photochromic [indole]naphthopyran compounds and their methods of preparation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.