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:
Jun. 06, 2023
Filed:
Jun. 05, 2018
Applicant:
Proterial, Ltd., Tokyo, JP;
Inventors:
Akihiro Maeta, Tottori, JP;
Katsumasa Yamasaki, Tottori, JP;
Assignee:
PROTERIAL, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 27/24 (2006.01); H01F 41/02 (2006.01); B24B 5/36 (2006.01); H01F 1/34 (2006.01); H01F 27/28 (2006.01);
U.S. Cl.
CPC ...
H01F 41/0206 (2013.01); B24B 5/36 (2013.01); H01F 1/344 (2013.01); H01F 27/24 (2013.01); H01F 27/2823 (2013.01);
Abstract
A tapered ferrite core having a solid or hollow cylindrical shape with larger length than outer diameter, and comprising a ground taper portion in at least one end portion, the taper portion having ground streaks extending in the longitudinal direction of the ferrite core, can be formed by centerless-grinding a rotating ferrite core by a rotating grinder.