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:
Feb. 21, 2024
Applicant:
Niterra Materials Co., Ltd., Yokohama, JP;
Inventors:
Kai Funaki, Yokohama, JP;
Hideki Sato, Yokohama, JP;
Assignee:
Niterra Materials Co., Ltd., Yokohama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16C 33/32 (2006.01);
U.S. Cl.
CPC ...
F16C 33/32 (2013.01); F16C 2206/44 (2013.01); F16C 2206/48 (2013.01); F16C 2206/56 (2013.01); F16C 2206/60 (2013.01); F16C 2223/06 (2013.01);
Abstract
A ceramic ball material according to an embodiment including: a spherical portion; and a band-shaped portion formed over a circumference of a surface of the spherical portion. The ceramic ball material has a ratio Rtb/Rts of 1.0 or more, where Rtb denotes a maximum cross-sectional height of a roughness profile on an outer peripheral surface of the band-shaped portion; and Rts denotes a maximum cross-sectional height of roughness on an outer peripheral surface of the spherical portion.