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:
Oct. 09, 2001
Filed:
May. 28, 1999
Applicant:
Inventors:
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 9/00 ; H01J 9/24 ;
U.S. Cl.
CPC ...
H01J 9/00 ; H01J 9/24 ;
Abstract
A sodium-containing glass substrate has a modified surface on which an electroconductive film is to be formed. The modified surface is constituted of a layer of which sodium concentration is lower than the bulk body of the glass substrate, preferably with a sodium content ratio to all the metal elements of not greater than 2 atomic percent. The modified surface may contain a reduced amount of sulfur as compared to the bulk body of the glass substrate.