Patent · US Expired

Process for purifying resorbable polyesters

US4810775A · kind A · utility

87Cited by

7References

23Claims

0Family size

Assignee

Boehringer Ingelheim GmbH · DE

Inventors

Dieter Bendix · Ingelheim am Rhein, DE
Dieter Reichert · Ingelheim am Rhein, DE
Michael Scharfe · Wiesbaden, DE

Key dates

Filing date	Mar 18, 1988
Grant date	Mar 7, 1989
Priority date	—
Expiry date	Mar 18, 2008

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29C67/24
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

The invention relates to the purification of polymers, particularly resorbable polyesters, using shear fields produced mechanically or by fluid dynamics.

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