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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.:

US 6821707 B1

PDFFull Text
Date of Patent:
Nov. 23, 2004

Filed:

Sep. 03, 1999

Optical information recording medium, producing method thereof and method of recording/erasing/reproducing information

Applicant:
Inventors:

Mayumi Uno, Osaka, JP;

Noboru Yamada, Osaka, JP;

Katsumi Kawahara, Osaka, JP;

Hiroyuki Ohta, Osaka, JP;

Eiji Ohno, Osaka, JP;

Ken'ichi Nagata, Hyogo, JP;

Assignee:

Matsushita Electric Industrial Co., Ltd., Osaka, JP;

Attorney:

Merchant & Gould P.C.

Primary Examiner:

Martin Angebranndt

Int. Cl.
CPC ...
G11B 7/24 ;
U.S. Cl.
CPC ...
G11B 7/24 ;
Abstract

The present invention provides an optical information medium having excellent weather resistance and repeating characteristics. The optical information medium has a barrier layer between a protective layer and a recording layer. The barrier layer includes GeN or GeON, and at least one element selected from the group consisting of Al, B, Ba, Bi, C, Ca, Ce, Cr, Dy, Eu, Ga, H, In, K, La, Mn, N, Nb, Ni, Pb, Pd, S, Si, Sb, Sn, Ta, Te, Ti, V, W, Yb, Zn and Zr.

Find Patent Forward Citations

Uno, Mayumi. (2004). Optical information recording medium, producing method thereof and method of recording/erasing/reproducing information (U.S. Patent No. 6821707). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6821707

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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