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. 08, 2021
Filed:
Aug. 09, 2018
Applicant:
Powdertech Co., Ltd., Kashiwa, JP;
Inventors:
Aya Sakuta, Kashiwa, JP;
Makoto Ishikawa, Kashiwa, JP;
Hiroki Sawamoto, Kashiwa, JP;
Tetsuya Uemura, Kashiwa, JP;
Assignee:
POWDERTECH CO., LTD., Kashiwa, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03G 9/113 (2006.01);
U.S. Cl.
CPC ...
G03G 9/1134 (2013.01); G03G 9/1131 (2013.01); G03G 9/1135 (2013.01); G03G 9/1138 (2013.01);
Abstract
There is provided a carrier including a magnetic core material having a surface coated with a surfactant-containing resin mixture of an elemental fluorine-containing resin and a polyimide resin. The carrier has an elution amount of an eluted material into water in an elution test ranging from 180 ppm to 3,500 ppm.