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:
Aug. 22, 2000
Filed:
Mar. 31, 1998
Applicant:
Inventor:
Tsutomu Banno, Shiga, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
313403 ; 3134 / ;
Abstract
In a color cathode ray tube, a slot type shadow mask in which the vertical pitch of slots is within 0.2 mm to 0.3 mm, the width of each bridging portion is within 0.02 mm to 0.08 mm and the width of each connecting portion of the bridging portions is within 0.005 mm to 0.03 mm is combined with a neck tube of the diameter within 20 mm to 25 mm.