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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 12665247 B1

PDFFull Text
Date of Patent:
Jun. 23, 2026

Filed:

Mar. 29, 2023

Copolymer, injection molded body, member to be compressed, and coated electrical wire

Applicant:

Daikin Industries, Ltd., Osaka, JP;

Inventors:

Tadaharu Isaka, Osaka, JP;

Yumi Zenke, Osaka, JP;

Yukari Yamamoto, Osaka, JP;

Hayato Tsuda, Osaka, JP;

Assignee:

DAIKIN INDUSTRIES, LTD., Osaka, JP;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

Catherine S Branch

Int. Cl.
CPC ...
H01M 50/193 (2021.01); B29C 45/00 (2006.01); C08F 114/26 (2006.01); C08F 214/26 (2006.01); C08L 27/18 (2006.01); C09D 127/18 (2006.01); C09D 127/20 (2006.01); C09K 3/10 (2006.01); H01B 3/44 (2006.01); H01G 11/80 (2013.01); H01M 50/176 (2021.01); H01M 50/184 (2021.01); H01M 50/188 (2021.01); H01M 50/198 (2021.01); B29K 27/18 (2006.01);
U.S. Cl.
CPC ...
H01M 50/193 (2021.01); B29C 45/0001 (2013.01); C08F 114/26 (2013.01); C08F 214/262 (2013.01); C08L 27/18 (2013.01); C09D 127/18 (2013.01); C09D 127/20 (2013.01); C09K 3/1009 (2013.01); H01B 3/445 (2013.01); H01G 11/80 (2013.01); H01M 50/176 (2021.01); H01M 50/184 (2021.01); H01M 50/188 (2021.01); H01M 50/198 (2021.01); B29K 2027/18 (2013.01); C08L 2205/025 (2013.01);
Abstract

A copolymer containing a tetrafluoroethylene unit, and a perfluoro(propyl vinyl ether) unit, wherein the copolymer has a content of the perfluoro(propyl vinyl ether) unit of 3.4 to 3.9% by mass with respect to the whole of the monomer units, and a melt flow rate of 29 to 36 g/10 min, and the number of functional groups of —CF═CF, —CFH, —COF, —COOH, —COOCH, —CONHand —CHOH of more than 50 per 10main-chain carbon atoms. Also disclosed is a sealing tool, an injection molded article, a member to be compressed including the copolymer, and a coated electric wire including a coating layer containing the copolymer.

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