Cleaning agent for optical surfaces
US4493783A · kind A · utility
31Cited by
26References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 28, 1983 |
| Grant date | Jan 15, 1985 |
| Priority date | — |
| Expiry date | Feb 28, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D17/0013
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Soft and hard contact lenses are freed from deposits by rubbing them with a particulate organic polymer with a carrier, the polymer having a particular size in the range from about one micron to about 600 microns and a Rockwell hardness in the range of from about R120 to about M68, or a shore hardness in the range from about A15 to about D100.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.