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:
Jan. 29, 1980
Filed:
Feb. 06, 1978
Applicant:
Inventors:
Johannes Blahak, Cologne, DE;
Roland Gipp, Cologne, DE;
Kuno Wagner, Leverkusen, DE;
Erwin Muller, Leverkusen, DE;
Jan Mazanek, Cologne, DE;
Peter Haas, Haan, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
521159 ; 521164 ; 528 60 ; 528 64 ; 528 77 ; 528 79 ; 528 84 ;
Abstract
This invention relates to new high molecular weight polyurethanes which contain a very small amount of urethane and urea groups. These new synthetic resins are built up as block copolymers and contain relatively high molecular weight segments which are derived from high melting and low melting polyols and linked together through ester and/or urethane and/or urea groups.
Blahak, Johannes. (1980). Process for the preparation of new segmented polyurethane resins derived (U.S. Patent No. 4186257). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4186257
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile