Prolonged action drug formulation
US4461776A · kind A · utility
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2Claims
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Key dates
| Filing date | Jan 28, 1982 |
| Grant date | Jul 24, 1984 |
| Priority date | — |
| Expiry date | Jan 28, 2002 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/1617
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The time during which a drug is pharmacologically active is prolonged by coating the drug with at least one chemical derivative of the drug having minor relative pharmacological activity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.