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:
Nov. 30, 1993
Filed:
Sep. 12, 1991
Applicant:
Inventors:
Takeshi Matsushita, Shizuoka, JP;
Akinobu Sano, Shizuoka, JP;
Shigeyuki Adachi, Shizuoka, JP;
Toshizo Watanabe, Shizuoka, JP;
Assignee:
Minebea Co., Ltd., Nagano, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
360127 ; 360126 ;
Abstract
There is disclosed a magnetic head which can be used for various magnetic disk drives and easily and economically fabricated. The head comprises a magnetic core consisting of a ferrite. The core is composed of two parts bonded together with a glass. A gap, a magnetic metal film, and an intermediate film are formed between the two parts of the core. The intermediate film is formed of the same glass as said glass by sputtering and has a thickness between 30 and 150 .ANG.. The metal film has a thickness between 1 and 10 .mu.m. The glass consists mainly of SiO.sub.2, for example.