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:
Dec. 02, 1986
Filed:
Jan. 24, 1983
Applicant:
Inventors:
Shinji Narishige, Mito, JP;
Tsuneo Yoshinari, Hitachi, JP;
Mituo Sato, Takahagi, JP;
Masayuki Takagi, Odawara, JP;
Sadanori Nagaike, Odawara, JP;
Toshihiro Yoshida, Fujisawa, JP;
Katsuya Mitsuoka, Hitachi, JP;
Assignee:
Computer Basic Technology Research Association, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ; G11B / ;
U.S. Cl.
CPC ...
360126 ; 360125 ; 360122 ;
Abstract
A thin film magnetic head comprises a lower magnetic member and an upper magnetic film which constitute a magnetic circuit having a magnetic gap at a predetermined location, and a conductor film forming a coil which intersects the magnetic circuit. At least the upper magnetic film has a magnetostriction constant which is not greater than 6.times.10.sup.-7 in the absolute value.