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:
Jun. 04, 2002
Filed:
Jun. 04, 1999
Hirofumi Ouchi, Tokyo, JP;
Toshihisa Obuse, Tokyo, JP;
Yoshio Kasuga, Tokyo, JP;
Tatsunori Hibara, Tokyo, JP;
Masao Kouhashi, Tokyo, JP;
Kouichi Yamada, Tokyo, JP;
Seiichi Handa, Tokyo, JP;
Hiromasa Ishii, Tokyo, JP;
Seiichi Watanabe, Tokyo, JP;
Mitsubishi Denki K.K., Tokyo, JP;
Abstract
A method for manufacturing a magnetic head core of a complex magnetic head includes binding a first core material of a U-shaped cross section and a second core material of a flat plate shape to form a tubular core material having two bonded portions between the first and second core materials. Then a plurality of grooves are formed in the tubular core material across one of the bonded portions to form a plurality of track surfaces. The grooves are then filled with a fused glass material, and the other of the bonded portions is removed to form a substantially U-shaped core block having a plurality of track surfaces separated by the glass-filled grooves. The U-shaped core block is then sliced along each of the grooves to obtain a plurality of magnetic head cores. A complex magnetic head manufactured by the method is also disclosed.