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:
Dec. 09, 1997
Filed:
Aug. 29, 1996
Applicant:
Inventors:
Assignee:
Siemens Aktiengesellschaft, Munchen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528210 ; 528219 ; 528374 ; 528375 ;
Abstract
In a process for the preparation of poly-o-hydroxyamides and poly-o-mercaptoamides, a bis-o-hydroxyamide or a bis-o-mercaptoamide is reacted with a dihydroxy compound in the presence of a basic catalyst.