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:
Jun. 11, 1985
Filed:
Feb. 10, 1984
Applicant:
Inventors:
Assignee:
Hitachi Maxell, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ;
U.S. Cl.
CPC ...
428422 ; 252 6254 ; 360134 ; 360135 ; 360136 ; 427128 ; 427131 ; 428 64 ; 428 63 ; 428411 ; 428447 ; 428500 ; 428497 ; 428695 ; 428694 ; 428900 ;
Abstract
A magnetic recording medium which comprises a substrate and a magnetic layer comprising magnetic powder and a resinous binder formed on the substrate, characterized in that the magnetic layer further comprises a lubricant and an unsaturated fatty acid ester, which is improved in durability.
Funahashi, Masaya. (1985). Magnetic recording medium (U.S. Patent No. 4522885). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4522885
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile