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:
Jul. 15, 2025
Filed:
Dec. 04, 2020
Applicant:
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Inventors:
Akitoshi Kasahara, Osaka, JP;
Naoki Kohyama, Osaka, JP;
Tomohiro Kanazawa, Osaka, JP;
Kenshi Tsuji, Osaka, JP;
Yoshiyuki Kita, Osaka, JP;
Atsushi Shimada, Osaka, JP;
Yuuki Sasagawa, Osaka, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C 27/04 (2006.01);
U.S. Cl.
CPC ...
C22C 27/04 (2013.01);
Abstract
A metal wire, which is one of a tungsten wire and a tungsten alloy wire, includes alkali metal on the surface thereof. The amount of alkali metal is at most 2.0 μg per 1 g of the metal wire.