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:
Nov. 04, 2003
Filed:
Dec. 20, 2001
Applicant:
Inventors:
Hiroshi Komori, Otsu, JP;
Hiroki Yamazaki, Koga-gun, JP;
Assignee:
Nippon Electric Glass Co., Ltd., Ostu, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03C 3/102 ; C03C 3/105 ; H01J 2/986 ;
U.S. Cl.
CPC ...
C03C 3/102 ; C03C 3/105 ; H01J 2/986 ;
Abstract
A CRT funnel of a non beam-index type is made of a lead glass which contains 10-30 mass % of PbO and has an X-ray absorption coefficient of 40 cm or more at 0.6 Å. The lead glass further contains Sb O and an additive including at least one of CeO and SnO . In case where the additive includes CeO , it is preferable that the content of CeO is not smaller than 0.01 mass % and is smaller than 0.5 mass %. In case where the additive includes SnO , the content of SnO preferably falls within a range of 0.001-2 mass %.