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:
Apr. 15, 2003
Filed:
Mar. 09, 2000
Kazue Masuda, Niigata-ken, JP;
Hiroshi Yamagami, Niigata-ken, JP;
Kinya Aoyagi, Niigata-ken, JP;
Junichi Niijima, Niigata-ken, JP;
Koji Suzuki, Niigata-ken, JP;
Masao Aoki, Niigata-ken, JP;
Alps Electric Co., Ltd., Tokyo, JP;
Abstract
A magnetic head includes a pair of magnetic core halves provided with at least metal magnetic films are combined together so that the metal magnetic thin films of one of the pair of magnetic core halves are abutted on the thin films of the other. A winding slot is provided in the abutting portions between the pair of magnetic core halves to form a front gap and back gap on both sides of the winding slot. The pair of magnetic core halves are bonded together with first bonding glass adjacent to the back gap, and second bonding glass adjacent to the front gap, which as a thermal expansion coefficient higher than that of the first bonding glass.