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:
Jun. 11, 2013
Filed:
May. 17, 2010
Tetsuhiro Sakamoto, Kanagawa, JP;
Jun Nakano, Tokyo, JP;
Takehide Endo, Kanagawa, JP;
Naoki Okawa, Shizuoka, JP;
Tetsuhiro Sakamoto, Kanagawa, JP;
Jun Nakano, Tokyo, JP;
Takehide Endo, Kanagawa, JP;
Naoki Okawa, Shizuoka, JP;
Sony Corporation, Tokyo, JP;
Sony DADC Corporation, Tokyo, JP;
Abstract
[Object] To provide a durable read-only optical recording medium having less variances in characteristics of a metal reflective film due to a temporal change. [Solving Means] Provided is a read-only optical recording medium () including: a substrate (); an information recording surface onto which information is recorded by combining pits (P) and lands (L); and a metal reflective film () that is provided in contact with the information recording surface and represented by AlXZ, where x and z each represent an atomic %, X is constituted of an element including at least Ti, Z is constituted of an element including at least Fe, x is 1.0 to 3.0, and z is 0.05 to 1.0.