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:
Nov. 18, 1997
Filed:
Jun. 27, 1996
Applicant:
Inventors:
Jean-Marie Bernard, Mornant, FR;
Jean-Luc LePage, Francheville, FR;
Arnaud Ponce, Aubervilliers, FR;
Florence Tournilhac, Paris, FR;
Assignee:
Rhone-Poulenc Chimie, Courbevoie, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ; C08K / ;
U.S. Cl.
CPC ...
528313 ; 528312 ; 528313 ; 528314 ; 528315 ; 528318 ; 528322 ; 528499 ; 524706 ; 524730 ; 524742 ; 524745 ; 252 891 ;
Abstract
Process for the preparation of polyimides or of their polypeptide hydrolysates which are at least 80% biodegradable, by thermal polycondensation of at least one amino acid, optionally followed by hydrolysis, the thermal polycondensation step being carried out in the presence of at least one 'acid catalyst' chosen from
Bernard, Jean-Marie. (1997). Process for the preparation of polyimides or of their biodegradable (U.S. Patent No. 5688902). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5688902
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile