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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.:

US 5004836 B1

PDFFull Text
Date of Patent:
Apr. 02, 1991

Filed:

Nov. 13, 1989

Aromatic polyethers containing keto groups in side chains

Applicant:
Inventors:

Hans-Rytger Kricheldorf, Hamburg, DE;

Ulrich Delius, Ahrensburg, DE;

Rolf Wehrmann, Krefeld, DE;

Assignee:

Bayer Aktiengesellschaft, Leverkusen, DE;

Attorney:

Connolly and Hutz

Primary Examiner:

James H Reamer

Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
568333 ; 528125 ;
Abstract

This invention relates to new aromatic polyethers, preferably polyphenylene ethers, containing keto groups in side chains and their use.

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