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. 03, 1988
Filed:
Mar. 20, 1986
Applicant:
Inventors:
Yoshiharu Katsuta, Takatsuki, JP;
Haruo Ando, Suita, JP;
Assignee:
Hitachi Maxell, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428323 ; 427131 ; 428329 ; 428694 ; 428900 ;
Abstract
A magnetic recording medium having a broad dynamic range over an entire range of frequency which comprises a substrate material and a magnetic layer comprising magnetic particles and a resinous binder provided on at least one of the surfaces of the substrate material, characterized in that the magnetic layer is constructed as a double layered structure comprising an upper layer and a lower layer and which satisfies the following requirements:
Katsuta, Yoshiharu. (1988). Magnetic recording medium (U.S. Patent No. 4741953). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4741953
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile