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:
Mar. 19, 1991
Filed:
Aug. 01, 1989
Applicant:
Inventors:
Assignee:
Nippon Mining Company, Limited, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
360120 ; 360126 ;
Abstract
A magnetic head with a pair of mated core halves, the mating surfaces of the core halves being bonded with a predetermined gap length provided therebetween. The magnetic head has a gap portion where, on each of the mating surfaces of the core halves, a non-magnetic dielectric layer of SiO.sub.2 which is adjacent to the core half, a barrier layer, and a bonding glass layer are successively formed. The glass layers each associated with the corresponding core half are fusion pressure bonded together in such a manner as to form the gap portion.