Patent · US Expired

Solid dosage forms that contain clathrates of 17.alpha.-ethinyl estradiol

US5798338A · kind A · utility

13Cited by

1References

14Claims

0Family size

Assignee

SCHERING CORPORATION · US

Inventors

Thomas Backensfeld · Berlin, DE
Johannes Tack · Berlin, DE

Key dates

Filing date	Apr 2, 1997
Grant date	Aug 25, 1998
Priority date	—
Expiry date	Apr 2, 2017

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB82Y5/00
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

A method and pharmaceutical compositions are disclosed for reducing oxidative degradation of 17 .alpha.-ethinylestradiol comprising combining the estradiol with an effective amount of cyclodextrin, thus forming a cyclodextrin clathrate of the steroid.

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