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:
Nov. 06, 2012
Filed:
Nov. 25, 2009
Shinichi Ishibashi, Tokyo, JP;
Masato Fukushima, Chiba, JP;
Akira Yamane, Ichihara, JP;
Showa Denko K.K., Tokyo, JP;
Abstract
Provided is a method for manufacturing, in a simple process, a magnetic recording medium having a distinct magnetic recording pattern formed thereon. A method for manufacturing a magnetic recording medium having a magnetically-separated magnetic recording pattern MP, the method at least including; a first step of forming a first magnetic layeron a non-magnetic substrate; a second step of forming a resist layeron the first magnetic layer, the resist layerbeing patterned in correspondence with the magnetic recording pattern MP; a third step of forming a second magnetic layerso as to cover a surface of the first magnetic layerhaving the resist layerformed thereon; a fourth step of removing the resist layertogether with the second magnetic layerformed thereon; and a fifth step of partially removing the first magnetic layeror partially modifying magnetic property of the first magnetic layer
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile