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:
Sep. 19, 2023
Filed:
Apr. 13, 2020
Applicant:
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Inventors:
Tomohiro Kanazawa, Osaka, JP;
Naoki Kohyama, Osaka, JP;
Yoshihiro Iguchi, Osaka, JP;
Yui Nakai, Osaka, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C 27/04 (2006.01); A61L 31/02 (2006.01); A61L 31/14 (2006.01); B21C 1/02 (2006.01); C22F 1/18 (2006.01);
U.S. Cl.
CPC ...
C22C 27/04 (2013.01); A61L 31/022 (2013.01); A61L 31/14 (2013.01); B21C 1/02 (2013.01); C22F 1/18 (2013.01); Y10T 428/12431 (2015.01);
Abstract
A tungsten wire is a tungsten wire containing tungsten or a tungsten alloy, a diameter of the tungsten wire is at most 100 μm, and a total number of torsional rotations to breakage per length of 50 mm of the tungsten wire is greater than or equal to 250×exp(−0.026×D) when a tension that is 50% of a breakage tension of the tungsten wire is applied as a load, D denoting the diameter of the tungsten wire.