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:
Feb. 07, 1989
Filed:
Feb. 18, 1987
Applicant:
Inventors:
Yoji Takeuchi, Kyoto, JP;
Kenji Sumiya, Suita, JP;
Assignee:
Hitachi Maxell, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
4284111 ; 427128 ; 427131 ; 427132 ; 428421 ; 428422 ; 428694 ; 428695 ; 428900 ; 428704 ;
Abstract
A magnetic recording medium comprising a substrate, a magnetic layer formed on one surface of the substrate and a back coating layer formed on the other or back surface of the substrate, wherein the back coating layer contains at least one polyfluoropolyether having a polar group at least one molecular end and optionally at least one fluorine-containing solid lubricant, which has a small coefficient of friction and improved jitter characteristics, durability and corrosion resistance.
Takeuchi, Yoji. (1989). Magnetic recording medium (U.S. Patent No. 4803125). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4803125
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile