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. 22, 1994
Filed:
Jul. 15, 1991
Iwao Abe, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
Thin film type magnetic transducer head is disclosed in which a track width recorded on a magnetic recording medium is determined by a thickness of thin film magnetic core halves formed on a non-magnetic substrate. The head has a rear core portion having a larger thickness than the track width forming portion of the head facing to the travelling magnetic recording medium, and a coil wound around the rear core portion. The coil comprises first coil portions underlying the rear core portion and second coil portions overlying the rear core portion and third coil portions connecting the first and the second core portions. The head is manufactured by thin film forming technique in combination with photolithography.