Composition for preventing the accumulation of inorganic deposits on contact lenses
US5447650A · kind A · utility
4Cited by
18References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 6, 1993 |
| Grant date | Sep 5, 1995 |
| Priority date | — |
| Expiry date | Oct 6, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/38654
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A composition including a neutralizing system and a sequestering agent is described which prevents the accumulation of inorganic deposits on contact lenses, particularly when used regularly in a conventional hydrogen peroxide disinfection regimen. The neutralizing system includes at least one reducing agent, a reductase, or both. The sequestering agent preferably is gluconic acid, a polymetaphosphate or their salts. Sodium hexametaphosphate is the most preferred sequestering agent; catalase is the most preferred agent for use as the neutralizing system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.