Method for modifying a surface
US6719929B2 · kind B2 · utility
130Cited by
10References
51Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2001 |
| Grant date | Apr 13, 2004 |
| Priority date | — |
| Expiry date | Sep 16, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2011/0041
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of forming a contact lens within a mold is provided. A coating of a polyionic material(s) is applied to the mold before forming a lens therein. The coating can be applied by spraying or dipping the mold within a solution(s) of polyionic materials. Various other additives can also be applied to the mold. The coating can then be transferred to a contact lens formed within the mold such that the resulting lens has altered surface properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.