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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 6713418 B1

PDFFull Text
Date of Patent:
Mar. 30, 2004

Filed:

May. 29, 2002

Glass article and glass substrate for information recording media using the same

Applicant:
Inventors:

Shoichi Kishimoto, Osaka, JP;

Akihiro Koyama, Osaka, JP;

Hiroyuki Tanaka, Osaka, JP;

Nobuyuki Yamamoto, Osaka, JP;

Assignee:

Nippon Sheet Glass Co., Ltd., Osaka, JP;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

David Sample

Assistant Examiner:

Elizabeth A Bolden

Int. Cl.
CPC ...
C03C 3/087 ;
U.S. Cl.
CPC ...
C03C 3/087 ;
Abstract

A glass article of the present invention has a rate of dissolution in an acidic liquid of from 10 to 100 nm/min in terms of etching rate in immersing in a 0.1% by weight 50° C. aqueous solution of hydrofluoric acid and an average linear thermal expansion coefficient of 70×10 /° C. or higher as measured in the range of from −50° C. to 70° C., and the working temperature T (° C.) and the liquidus temperature T (° C.) thereof satisfy the relationship: T −T ≧−100° C.

Find Patent Forward Citations

Kishimoto, Shoichi. (2004). Glass article and glass substrate for information recording media using the same (U.S. Patent No. 6713418). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6713418

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