Patent · US Expired

Polymeric diffusion matrix containing propranolol

US4460562A · kind A · utility

59Cited by

15References

8Claims

0Family size

Assignee

Key Pharmaceuticals, Inc. · US

Inventors

Alec D. Keith · Miami, US
Wallace Snipes · State College, US

Key dates

Filing date	Mar 30, 1983
Grant date	Jul 17, 1984
Priority date	—
Expiry date	Mar 30, 2003

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07K2319/74
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

A self-supporting polymeric diffusion matrix provides for the sustained release of propranolol in order to deliver the propranolol to a patient. The matrix comprises from about 1 to about 60% of a polar plasticizer, from about 6 to about 30% by weight polyvinylalcohol, from about 2 to about 30% by weight polyvinylpyrrolidone, and a pharmaceutically effective amount of propranolol to provide a sustained release of propranolol over a prolonged period.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.