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:
Feb. 03, 2026
Filed:
Aug. 23, 2023
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:
Primary Examiner:
Int. Cl.
CPC ...
H01B 7/02 (2006.01); C08F 214/26 (2006.01); H01B 3/44 (2006.01);
U.S. Cl.
CPC ...
C08F 214/262 (2013.01); H01B 3/441 (2013.01); H01B 7/02 (2013.01); C08F 2500/12 (2013.01);
Abstract
A copolymer containing tetrafluoroethylene unit and perfluoro (propyl vinyl ether) unit, wherein the copolymer has a content of perfluoro (propyl vinyl ether) unit of 3.5 to 4.2% by mass with respect to the whole of the monomer units, a melt flow rate at 372° C. of 18.0 to 22.0 g/10 min, and the number of functional groups of 50 or less per 10main-chain carbon atoms.