Patent · US Expired

Polyesters of a polyhydroxycarboxylic acid and a polyol having a substituent with electrolyte properties

US5929196A · kind A · utility

73Cited by

2References

27Claims

0Family size

Assignee

Schwarz Pharma Ltd. · DE

Inventors

Thomas Kissel · Staufen, DE
Youxin Li · Langenfeld, DE

Key dates

Filing date	Apr 24, 1997
Grant date	Jul 27, 1999
Priority date	—
Expiry date	Apr 24, 2017

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G63/60
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

The invention relates to new polyesters of a polyol containing substituents with electrolyte properties with polymeric hydroxycarboxylic esters, their method of preparation and their use. The polyesters are particularly suitable for use in the preparation of sustained-release drugs.

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