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:
Jul. 23, 1991
Filed:
Nov. 01, 1989
Katsuyoshi Chiba, Hachioji, JP;
Masayuki Katsumoto, Kodaira, JP;
Yasutaro Uesaka, Kokubunji, JP;
Heigo Ishihara, Tokyo, JP;
Naoki Kodama, Tachikawa, JP;
Hajime Fukke, Tama, JP;
Iwao Matsuyama, Sagamihara, JP;
Tsuneo Suganuma, Tokorozawa, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A method for magnetic orientation of a magnetic recording medium using Meissner effect of a superconductor and a system therefor and a magnetic recording medium produced thereby. The magnetic particles of plate hexagonal barium ferrite in the magnetic coating are allowed to orient in the longitudinal direction thereof so that a magnetic recording medium having a magnetic orientation in such direction with the magnetic particles can be obtained.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile