Contact lens
US8461226B2 · kind B2 · utility
1Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 13, 2010 |
| Grant date | Jun 11, 2013 |
| Priority date | — |
| Expiry date | Jan 28, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D11/00903
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of making a contact lens involves depositing on a portion of a molding surface of a contact lens mold a colorant composition comprising a pigment, a copolymer of 2-hydroxyethylmethacrylate and N-vinylpyrrolidinone, and a crosslinking monomer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.