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:
Oct. 03, 1978
Filed:
May. 27, 1977
Applicant:
Inventors:
Noboru Yamazaki, Tokyo, JP;
Fukuji Higashi, Tokyo, JP;
Assignee:
Sumitomo Chemical Company, Limited, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528337 ; 528335 ; 528346 ; 528347 ; 528348 ;
Abstract
Aromatic polyamides having high polymerization degree are produced by polycondensing an arylene containing aminocarboxylic acid, or a dicarboxylic acid with an aromatic diamine in the presence of a phosphorus compound, a tertiary amine and a metal halide using N-methylpyrrolidone and/or dimethylacetamide as a solvent.
Yamazaki, Noboru. (1978). Production of aromatic polyamides from dicarboxylic acid and diamine (U.S. Patent No. 4118374). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4118374
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile