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:
Sep. 03, 2002
Filed:
Mar. 27, 2001
Applicant:
Inventor:
Hideki Yamaguchi, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B 1/100 ;
U.S. Cl.
CPC ...
G11B 1/100 ;
Abstract
A magnetic field generator includes a top yoke having an opening, a back yoke fixed to the top yoke, a center yoke fixed to the back yoke in such a manner as to face to the opening of the top yoke, and a coil wound around the center yoke. The opening has a straight-line shaped central portion with its gap kept constant, and both end portions with their gaps becoming larger as going outwardly from the vicinities of both end portions of the center yoke.
Yamaguchi, Hideki. (2002). Magnetic field generator and magneto-optical storage device using the same (U.S. Patent No. 6445648). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6445648
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile