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:
Apr. 13, 1982
Filed:
Nov. 24, 1980
Applicant:
Inventors:
Rolf Dhein, Krefeld, DE;
Knud Reuter, Krefeld, DE;
Hans Rudolph, Krefeld, DE;
Jorg Pfitzner, Wuppertal, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ;
U.S. Cl.
CPC ...
528 80 ; 528302 ; 528359 ; 528361 ; 525450 ;
Abstract
Polyesters having a hydroxyl number of from 50 to 400 and containing 20 to 90% by weight of co-condensed .beta.-hydroxybutyric acid units have proved to yield transparent, glossy, elastic and hard coatings.