Derivatives of carbocyclic fused naphthopyrans
US5783116A · kind A · utility
26Cited by
33References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 16, 1997 |
| Grant date | Jul 21, 1998 |
| Priority date | — |
| Expiry date | Oct 16, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/23
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Described are novel pentahydrophenanthro9,10-b!pyrans and tetrahydrocyclopentac!-naphtho1,2-b!pyrans. Also described are polymeric organic host materials that contain or that are coated with such compounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.