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.

Date of Patent:
Apr. 06, 2021

Filed:

Jan. 15, 2018
Applicant:

Kobe Steel, Ltd., Kobe, JP;

Inventor:

Yuki Tauchi, Kobe, JP;

Assignee:

Kobe Steel, Ltd., Kobe, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 7/24 (2013.01); G11B 7/2548 (2013.01); C23C 14/34 (2006.01); G11B 7/26 (2006.01); C23C 14/08 (2006.01);
U.S. Cl.
CPC ...
G11B 7/2548 (2013.01); C23C 14/3414 (2013.01); G11B 7/266 (2013.01); C23C 14/083 (2013.01); C23C 14/086 (2013.01);
Abstract

A dielectric layer is formed from an oxide containing Sn and at least one of Zn, Zr, Si and Ga. The molar percentages of Sn, Zn, Zr, Si, and Ga, relative to the total elements in the oxide, represented by a, b, c, d, and e, respectively, satisfy the conditions (1)-(7): (1) 0≤b/(a+b)≤0.6, (2) 0≤(c+d)/(a+b+c+d+e)≤0.5, (3) 0≤b≤50, (4) 0≤c≤40, (5) 0≤d≤45, (6) 0≤e≤40, and (7) 20≤b+c+d+e≤80. The dielectric layer enables favorable information recording in an oxide-based recording layer on which the dielectric layer is directly overlaid, does not require preventive measures for health hazard, and is superior in durability.


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Tauchi, Yuki. (2021). Dielectric layer, optical recording medium, sputtering target and oxide (U.S. Patent No. 10971183). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10971183

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