Reactive uv absorbing compositions and method of preparing lenses therefrom
US4963160A · kind A · utility
31Cited by
10References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 14, 1989 |
| Grant date | Oct 16, 1990 |
| Priority date | — |
| Expiry date | Mar 14, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D403/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An ultraviolet radiation absorbing agent for bonding to an ocular lens, wherein the agent has the formula: ##STR1## wherein A and B are ultraviolet radiation absorbing components which are either identical to or are dissimilar to each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.