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:
Jan. 27, 2026
Filed:
Nov. 18, 2022
Applicant:
Somar Corporation, Tokyo, JP;
Inventors:
Hirohisa Ishizaki, Tokyo, JP;
Akira Ochiai, Tokyo, JP;
Assignee:
SOMAR CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10M 169/04 (2006.01); C10M 105/06 (2006.01); C10M 105/36 (2006.01); C10M 105/38 (2006.01); C10M 107/34 (2006.01); C10M 125/12 (2006.01); C10M 125/30 (2006.01); C10M 155/02 (2006.01); C10M 161/00 (2006.01); H01F 1/44 (2006.01); C10N 40/08 (2006.01); C10N 50/00 (2006.01);
U.S. Cl.
CPC ...
C10M 169/044 (2013.01); C10M 105/06 (2013.01); C10M 105/36 (2013.01); C10M 105/38 (2013.01); C10M 107/34 (2013.01); C10M 125/12 (2013.01); C10M 125/30 (2013.01); C10M 155/02 (2013.01); C10M 161/00 (2013.01); H01F 1/447 (2013.01); C10M 2201/064 (2013.01); C10M 2201/103 (2013.01); C10M 2203/065 (2013.01); C10M 2207/2825 (2013.01); C10M 2207/2835 (2013.01); C10M 2209/1085 (2013.01); C10M 2229/041 (2013.01); C10N 2040/08 (2013.01); C10N 2050/015 (2020.05);
Abstract
The present invention provides a magnetic viscous fluid comprising a magnetic particle, at least one selected from ester base synthetic oil, ether base synthetic oil, and alkylnaphthalene having an alkyl group with 10 to 20 carbons, an inorganic cation exchanger with a siloxane bond, and silicone oil.