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. 23, 1989
Filed:
Mar. 19, 1987
Applicant:
Inventors:
Hideo Kurokawa, Katano, JP;
Tsutomu Mitani, Neyagawa, JP;
Masaru Odagiri, Kawanishi, JP;
Taketoshi Yonezawa, Ibaraki, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428336 ; 427131 ; 428408 ; 428694 ; 428695 ; 428900 ;
Abstract
A magnetic recording medium is provided with a protective film made of a diamond like carbon film and an organic compound film on a ferromagnetic metal recording film; and it realizes excellent durability and small spacing loss or the like; and as a result high density magnetic recording is obtainable.
Kurokawa, Hideo. (1989). Magnetic recording medium (U.S. Patent No. 4833031). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4833031
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile