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:
Oct. 07, 1986
Filed:
Apr. 27, 1984
Applicant:
Inventors:
Yukio Matsumoto, Mito, JP;
Hirokazu Moriizumi, Mito, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428142 ; 360134 ; 360135 ; 360136 ; 427131 ; 427128 ; 428323 ; 428328 ; 428336 ; 4284237 ; 4284735 ; 4284744 ; 4284752 ; 428480 ; 428694 ; 428900 ; 428910 ;
Abstract
A magnetic recording medium comprising a non-magnetic resin support, and a magnetic layer form on the support. A polyester or polyurethane resin undercoat is formed between the support and the magnetic layer in the form of islands which are isolated from one another.
Matsumoto, Yukio. (1986). Magnetic recording media having an undercoat as islands (U.S. Patent No. 4615930). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4615930
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile