Patent · US Expired

Polymeric diffusion matrix containing ester derivatives of estradiol

US4321252A · kind A · utility

12Cited by

11References

17Claims

0Family size

Assignee

Key Pharmaceuticals, Inc. · US

Inventors

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

Key dates

Filing date	Dec 17, 1980
Grant date	Mar 23, 1982
Priority date	—
Expiry date	Dec 17, 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 an estradiol ester by delivery to a patient requiring uterine wall maintenance or other types of estrogen therapy wherein the matrix comprises a polar plasticizer, polyvinylalcohol, polyvinylpyrrolidone, and a pharmaceutically effective amount of estradiol ester.

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