Patent · US Expired

Polymeric diffusion matrix containing phenylephrine

US4294820A · kind A · utility

60Cited by

13References

10Claims

0Family size

Assignee

Key Pharmaceuticals, Inc. · US

Inventors

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

Key dates

Filing date	Jul 9, 1980
Grant date	Oct 13, 1981
Priority date	—
Expiry date	Jul 9, 2000

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61K31/565
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

There is disclosed a polymeric diffusion matrix for the sustained release of phenylephrine by transdermal delivery to a patient wherein the matrix comprises a polar plasticizer, polyvinylalcohol, polyvinylpyrrolidone, and a pharmaceutically effective amount of phenylephrine.

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