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:
Sep. 01, 1987
Filed:
Jul. 16, 1984
Applicant:
Inventors:
Shuroku Hosaka, Kamakura, JP;
Masaaki Shiga, Fujisawa, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ;
U.S. Cl.
CPC ...
360121 ; 360118 ;
Abstract
A magnetic head assembly comprises a recording-reproducing head and erasing heads placed at both sides of said recording-reproducing head and the magnetic field strength of the erasing gap of one of the erasing heads which move adjacent data produced by a recording-reproducing gap is made different from that of the erasing gap of the other erasing gap to control a data area to be erased.
Hosaka, Shuroku. (1987). Tunnel erase magnetic head assembly (U.S. Patent No. 4691260). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4691260
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile