Preparation of ophthalmic compositions
US6828356B2 · kind B2 · utility
9Cited by
11References
22Claims
0Family size
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Key dates
| Filing date | Jul 29, 2002 |
| Grant date | Dec 7, 2004 |
| Priority date | — |
| Expiry date | Dec 15, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K3/01
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A method of preparing a polymeric demulcent-containing ophthalmic composition. The method includes immersing a polymeric demulcent in water or in an aqueous solution containing one or more ingredients, agitating the water or solution at 25 to 45° C. until the polymeric demulcent is dissolved to form a polymeric demulcent-containing solution, and optionally adding one or more other ingredients to the polymeric demulcent-containing solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.