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:
Dec. 31, 2002
Filed:
Oct. 04, 2000
Applicant:
Inventors:
Assignee:
Hitachi Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 2/907 ;
U.S. Cl.
CPC ...
H01J 2/907 ;
Abstract
A color cathode ray tube can reduce a warp amount derived from a spring back after shaping a shadow mask and can suppress the deformation of a main surface of the shadow mask after fixedly securing the shadow mask and a mask frame to each other. The color cathode ray tube includes tongue portions which are protruded from distal ends of skirt portions of the shadow mask and a plurality of stress absorption holes are formed in the tongue portions.