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:
Apr. 06, 2021
Filed:
Jan. 24, 2019
Applicant:
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Inventors:
Tomohiro Kanazawa, Osaka, JP;
Naoki Kohyama, Osaka, JP;
Yoshihiro Iguchi, Osaka, JP;
Yuuki Sasagawa, Osaka, JP;
Tetsuji Shibata, Osaka, JP;
Toshiyuki Tani, Shiga, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23D 61/18 (2006.01); B23D 65/00 (2006.01); B23D 57/00 (2006.01); B28D 5/04 (2006.01); C22C 38/12 (2006.01); C22C 27/04 (2006.01); B24B 27/06 (2006.01); C25D 15/02 (2006.01);
U.S. Cl.
CPC ...
B23D 61/185 (2013.01); B23D 57/0007 (2013.01); B23D 57/0023 (2013.01); B23D 61/18 (2013.01); B23D 65/00 (2013.01); B24B 27/0633 (2013.01); B28D 5/045 (2013.01); C22C 27/04 (2013.01); C22C 38/12 (2013.01); C25D 15/02 (2013.01);
Abstract
A metal wire containing tungsten is provided. A tungsten content of the metal wire is at least 90 wt %. A tensile strength of the metal wire is at least 4000 MPa. An elastic modulus of the metal wire is at least 350 GPa and at most 450 GPa. A diameter of the metal wire is at most 60 μm. An average crystal grain size of the metal wire in a cross-section orthogonal to an axis of the metal wire is at most 0.20 μm.