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:
Jan. 07, 1997
Filed:
Aug. 18, 1995
Yoshitaka Kawanishi, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
An information recording medium includes a transparent substrate, an interference layer formed on the transparent substrate, a recording layer formed on the interference layer, a reflective layer formed on the recording layer, and a coating resin formed on the reflective layer. The recording layer has a pit region and a mirror region. The reflectivity of the pit portion changes as a thickness of the recording layer changes. The reflectivity characteristic of the mirror region is selectively adjustable from that of the pit region within a range of thicknesses of the interference layer.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile