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:
Sep. 14, 2004
Filed:
May. 07, 2002
Applicant:
Inventors:
Yuichi Kuroki, Funabashi, JP;
Tsunehiko Sugawara, Funabashi, JP;
Assignee:
Asahi Glass Company, Limited, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03C 3/068 ; C03C 3/085 ;
U.S. Cl.
CPC ...
C03C 3/068 ; C03C 3/085 ;
Abstract
A glass panel for a color cathode ray tube, which has a linear absorption coefficient of X-ray with a wavelength of 0.06 nm of from 30 to 38 cm and which has a layer having a compression stress of at least 70 MPa formed by a chemical strengthening method at least at short axis end portions and/or long axis end portions of the outer surface of a face portion and at a center portion of the inner surface of the face portion.