Ophthalmic composition with hyaluronic acid and polymeric biguanide
US8759321B2 · kind B2 · utility
3Cited by
20References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2008 |
| Grant date | Jun 24, 2014 |
| Priority date | — |
| Expiry date | Jun 10, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/48
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An ophthalmic composition comprising 0.5 ppm to 3 ppm of poly(hexamethylene biguanide), and 0.002 wt. % to 0.03 wt. % of hyaluronic acid. The weight ratio of hyaluronic acid to poly(hexamethylene biguanide) in the composition is from 45:1 to 120:1. The invention is also directed to a method of cleaning, disinfecting or packaging contact lenses with the composition, or to a method of rewetting contact lenses with the composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.