Methylene pyrrolidone copolymers for contact lens and pharmaceutical preparations
US5035884A · kind A · utility
63Cited by
5References
5Claims
0Family size
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Key dates
| Filing date | Feb 15, 1990 |
| Grant date | Jul 30, 1991 |
| Priority date | — |
| Expiry date | Feb 15, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/043
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A new series of copolymers which are useful as coatings for solid dosage forms, for transdermal devices, for wound dressing materials, and for contact lenses. Also disclosed are methods for preparing monomers and polymers as well as pharmaceutical compositions containing such polymers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.