Surface treatment of silicone hydrogel contact lenses
US6348507B1 · kind B1 · utility
103Cited by
28References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 5, 1999 |
| Grant date | Feb 19, 2002 |
| Priority date | — |
| Expiry date | May 5, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2383/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention provides an optically clear, hydrophilic coating upon the surface of a silicone hydrogel lens by plasma treating the lens and subsequently heating the lens in an aqueous solution containing a surface-protective agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.