Selenium-containing transparent optical material
US6482918B2 · kind B2 · utility
0Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 23, 2001 |
| Grant date | Nov 19, 2002 |
| Priority date | — |
| Expiry date | Aug 23, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/041
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
There are herein disclosed a transparent optical material containing at least one selenium atom, a plastic lens comprising the transparent optical material, and methods for preparing them. In addition, there are also disclosed novel selenium-containing compounds represented by the following formulae (1), (2) and (4) which are useful for the transparent optical material and the plastic lens: wherein symbols are as defined in the specification.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.