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:
Jul. 21, 1992
Filed:
Jun. 20, 1990
Hitachi Maxell, Ltd., Osaka, JP;
Abstract
Disclosed is an optical recording medium comprising a transparent substrate, a transferred layer of preformat pattern formed on one side of the transparent substrate, and a recording layer laminated on the preformat patterns formed on the surface of the transferred layer, wherein the transferred layer is composed of a three-layer structure with a first layer composed of a first organic compound layer composed of a first organic compound simple substance, a mixed layer composed of a mixture of the first and a second organic compound, and a second organic compound layer composed of a second organic compound simple substance, layered in the above order from the transparent substrate and a method for manufacturing the optical recording medium.