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:
Mar. 10, 2026
Filed:
May. 24, 2021
Applicant:
Toray Industries, Inc, Tokyo, JP;
Inventors:
Taisuke Hirano, Nagoya, JP;
Risano Nakajima, Otsu, JP;
Masato Akahira, Nagoya, JP;
Soichiro Iwahana, Nagoya, JP;
Koji Yamauchi, Nagoya, JP;
Assignee:
Toray Industries, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 65/40 (2006.01);
U.S. Cl.
CPC ...
C08G 65/40 (2013.01); C08G 2250/00 (2013.01); C08G 2650/50 (2013.01);
Abstract
A crystalline polyethernitrile with a difference between a melting point and a crystallization temperature at a time of temperature-fall being 40° C. or more and 100° C. or less, the crystalline polyethernitrile includes N repeating units represented by Formula (I) and M repeating units represented by Formula (II), N and M being integers satisfying 0.90<[N/(N+M)]<1.00: in Formulas (I) and (II), Arand Arhave one framework selected from units represented by Formula (a) to Formula (f), with a proviso that Arand Arare not the same,