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:
May. 21, 2024
Filed:
Mar. 06, 2020
Applicants:
Ngk Spark Plug Co., Ltd., Nagoya, JP;
Osaka University, Osaka, JP;
Inventors:
Hidetoshi Fujii, Suita, JP;
Yoshiaki Morisada, Suita, JP;
Yusuke Katsu, Nagoya, JP;
Hiroki Takeuchi, Nagoya, JP;
Assignees:
NTK CUTTING TOOLS CO., LTD., Komaki, JP;
OSAKA UNIVERSITY, Suita, JP;
Primary Examiner:
Int. Cl.
CPC ...
B23K 20/00 (2006.01); B23K 20/12 (2006.01); B23K 103/04 (2006.01);
U.S. Cl.
CPC ...
B23K 20/1255 (2013.01); B23K 2103/04 (2018.08);
Abstract
A friction stir welding tool () has a shoulder portion () and a probe portion () provided on a bottom surface of the shoulder portion (). The probe portion () has a length of 5.5 mm or more. In the friction stir welding tool (), a ceramic material whose main phase is silicon nitride or sialon is used as a base material.