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:
Oct. 17, 2000
Filed:
Mar. 30, 1999
Applicant:
Inventors:
Yoichi Nishimuro, Kunitachi, JP;
Munenori Iizuka, Kodaira, JP;
Kunio Machida, Tokyo, JP;
Hideharu Daifuku, Fujisawa, JP;
Assignee:
Bridgestone Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01F / ; G03G / ;
U.S. Cl.
CPC ...
252 6254 ; 492-8 ; 492 15 ;
Abstract
A bonded magnet featuring mechanical strength is obtained from a bonded magnet-forming composition comprising magnetic powder and a binder wherein the binder is based on highly crystalline polypropylene in one form or contains a modified polyolefin in another form. Also provided is a magnet roller comprising a magnet body (1) of bonded magnet configured into a roller shape and a shaft (2) associated therewith wherein at least the magnet body (1) is formed from the bonded magnet-forming composition.