The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 16, 1981
Filed:
Sep. 12, 1979
Applicant:
Inventor:
Robert S Nevin, Indianapolis, IN (US);
Assignee:
Eli Lilly and Company, Indianapolis, IN (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ;
U.S. Cl.
CPC ...
528361 ; 528354 ; 528356 ; 424 19 ; 424 20 ; 424 32 ; 424 78 ; 1283355 ;
Abstract
Lactic-glycolic copolymers having molecular weights of about 6000 to about 35000 are prepared by condensation of lactic acid and glycolic acid in the presence of readily removable strong acid ion-exchange resins.