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:
Sep. 28, 2010
Filed:
Nov. 01, 2006
Applicants:
Shuichi Ohkubo, Tokyo, JP;
Eiji Kariyada, Tokyo, JP;
Inventors:
Shuichi Ohkubo, Tokyo, JP;
Eiji Kariyada, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 3/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A phase change optical disk includes a first dielectric film, a recording film, a second dielectric film and a reflecting film which are consecutively formed on a substrate. The second dielectric film includes therein a zinc sulfide at a rate of 10 to 40 mol % and a tantalum oxide at a rate of 20 to 50 mol %, for preventing sulfuration of Ag in the reflecting film.