Optic devices formed from melt processable thermoplastic materials having a high refractive index
US6008299A · kind A · utility
45Cited by
9References
15Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Aug 15, 1997 |
| Grant date | Dec 28, 1999 |
| Priority date | — |
| Expiry date | Aug 15, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/041
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates generally to optic devices such as ophthalmic lenses, lens blanks, and lens preforms, made from a thermoplastic material of a specific formula and a process for forming the same.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.