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:
Apr. 14, 1998
Filed:
Jul. 10, 1995
Hitachi, Ltd., Tokyo, JP;
Hitachi Electronic Devices Co., Ltd., Chiba-ken, JP;
Abstract
A color cathode ray tube which has its resolution improved all over its screen covering the central portion and the peripheral portion, either by elongating or narrowing the plate length of plate electrodes 243, which are formed between a first kind of focusing electrode 241 and a second kind of focusing electrode 242 constituting together the electrostatic quadrupole lens of a halved focusing electrode 24 and which are connected with the second kind of focusing electrode 242, at the vertical portion 2430 of a passage for a central electron beam, or by making the shape of the central electron beam passing hole of an electrode 245 formed with the electron beam passing holes of the first kind focusing electrode 241, longer than the shape of the electron beam passing holes for the side electron beams.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile