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:
May. 06, 1986
Filed:
Nov. 07, 1983
Applicant:
Inventors:
Kyuzo Nakamura, Yachimata, JP;
Yoshifumi Ota, Yachimata, JP;
Assignee:
Nihon Shinku Gijutsu Kabushiki Kaisha, Kanagawa, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428694 ; 360134 ; 360135 ; 360136 ; 427128 ; 427132 ; 2041 / ; 428900 ;
Abstract
A magnetic recording member characterized in that a magnetic film formed on a surface of a substrate has a very small amount of hydrogen mixed therein. The manufacturing process therefor is characterized in that hydrogen gas is introduced into the vacuum treatment chamber while the magnetic particles are adhered to the surface of the substrate.