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:
Feb. 10, 2004
Filed:
Oct. 26, 2001
Haruhiko Yoshida, Oohara, JP;
Nobuhiko Hosotani, Mobara, JP;
Mitsuru Watanabe, Mutsuzawa, JP;
Hiroshi Itou, Chiba, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A color cathode ray tube is constituted of a glass bulb which includes a panel portion having a faceplate portion with a phosphor screen on an inner surface thereof, a neck portion in which an electron gun is mounted, and a funnel portion which connects the panel portion and the neck portion. Assuming a thickness of a screen effective area of the faceplate portion along the tube axis direction as tc at a central section thereof, as tx at a peripheral section thereof along the major axis direction, and as td at a peripheral section thereof along the diagonal direction, the cathode ray tube has the relationship tc>td>tx.