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:
Dec. 26, 2006
Filed:
Aug. 09, 2001
Sinichi Ishibashi, Nagano, JP;
Toshinori Iwama, Nagano, JP;
Eiji Terashima, Nagano, JP;
Masao Kubota, Nagano, JP;
Yuji Kobayashi, Nagano, JP;
Sinichi Ishibashi, Nagano, JP;
Toshinori Iwama, Nagano, JP;
Eiji Terashima, Nagano, JP;
Masao Kubota, Nagano, JP;
Yuji Kobayashi, Nagano, JP;
Fuji Electric Co., Ltd., Kawasaki, JP;
Abstract
A thin-film magnetic recording medium is produced by forming a laminate for magnetic data recording on a nonmagnetic substrate through a dry process, forming a protection layer on the laminate also through a dry process, plasma-etching the protection layer, and forming a lubricant layer on the plasma-etched protection layer. All steps are completed continuously in a vacuum without abrasion. The surface of the resulting recording medium is substantially smoother than the prior art.