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:
Jan. 10, 1984
Filed:
Jun. 30, 1982
Tadashi Ido, Yokohama, JP;
Hirotaka Yokoyama, Yokosuka, JP;
Moriyasu Wada, Ninomiya, JP;
Toshihiko Oguchi, Kawasaki, JP;
Akio Ishizawa, Tokyo, JP;
Yoshiyasu Koike, Chigasaki, JP;
Tokyo Shibaura Denki Kabushiki Kaisha, Kawasaki City, JP;
Abstract
Disclosed is a magnetic recording medium comprising substrate and a resinous composition containing magnetic particles of uniaxially-anisotropic hexagonal crystals having particle diameters of 0.01.about.0.3 .mu.m and coated on said substrate; the ratio of remanent magnetization to saturation magnetization on the magnetization curve corrected to demagnetizing field which is measured in a direction vertical to the surface of the recording medium, ranging from 0.3 to 0.7. This magnetic recording medium requires no orientation treatment for its production.