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. 23, 1999
Filed:
Jul. 07, 1997
Kazumi Yoshioka, Kyoto, JP;
Eiji Ohno, Osaka, JP;
Hidemi Isomura, Osaka, JP;
Hiroyuki Ohta, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A method for manufacturing an optical information recording medium which is usually stable and is not affected by the environmental condition and an apparatus used therefor. The method comprises the steps of placing a substrate and a member comprising a material for a film opposing each other in a vacuum film forming chamber; forming a plasma by glow discharging a gas between the substrate and the member comprising a material for a film; and supplying a gas mixture containing water to the film forming chamber before forming films or during forming films of the protective layer by the film forming method in which the material for a film freed from the member comprising a material for a film by using the plasma as an energy source are attached or deposited on the substrate.