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 6578382 B1

PDF
Full Text
Expired
Date of Patent:
Jun. 17, 2003

Filed:

Mar. 28, 2001
Applicant:
Inventors:

Tetsuji Ueda, Koriyama, JP;

Akira Fujinoki, Koriyama, JP;

Hiroyuki Nishimura, Koriyama, JP;

Assignee:

Other;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03C 1/500 ;
U.S. Cl.
CPC ...
C03C 1/500 ;
Abstract

A method for heat treating a synthetic quartz glass for optical use in a heating furnace, that comprises covering the surroundings of a synthetic quartz glass body with a SiO powder having a mean dissolved hydrogen molecule concentration of 1×10 molecules/cm or higher, and then heat treating the body.


Find Patent Forward Citations

Ueda, Tetsuji. (2003). Synthetic quartz glass for optical use, heat treatment method and heat treatment apparatus for the same (U.S. Patent No. 6578382). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6578382

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