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. 12, 2026
Filed:
Jun. 23, 2023
Applicants:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Materials Co., Ltd., Kanagawa, JP;
Inventors:
Kai Funaki, Yokohama Kanagawa, JP;
Shoya Sano, Yokohama Kanagawa, JP;
Assignee:
Niterra Materials Co., Ltd., Yokohama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B 35/111 (2006.01); B28B 3/02 (2006.01); C04B 35/645 (2006.01); F16C 33/32 (2006.01);
U.S. Cl.
CPC ...
F16C 33/32 (2013.01); B28B 3/02 (2013.01); C04B 35/645 (2013.01); C04B 2235/94 (2013.01); C04B 2235/96 (2013.01); F16C 2206/40 (2013.01);
Abstract
A ceramic ball material according to the present embodiment includes a spherical portion, and a band-shaped portion formed over a circumference of a surface of the spherical portion. The band-shaped portion has a width in a range of 0.5 mm or more and 4.0 mm or less, both shoulders of which are provided with an R section having a radius of curvature of 0.02 mm or more. Any one of aluminum oxide, silicon nitride, boron nitride, and zirconium oxide is used as the ceramic.