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. 09, 2003
Filed:
Dec. 19, 2001
Tomoki Nakamura, Mobara, JP;
Hirotsugu Sakamoto, Chiba, JP;
Shinichi Kato, Mobara, JP;
Syoji Shirai, Mobara, JP;
Other;
Abstract
A color cathode ray tube has an electron gun including three in-line cathodes, first and second grid electrodes arranged in the order named, and plural electrodes for focusing three electron beams from the cathodes onto the phosphor screen. The following inequalities are satisfied: E≦1.4A−0.2B−2.7C−2D, and A≦0.35 mm, where A (mm) is a diameter of an electron-beam transmissive aperture in the first grid electrode, B (mm) is a diameter of an electron-beam transmissive aperture in the second grid electrode, C (mm) is a thickness of a portion of the first grid electrode immediately surrounding the electron-beam transmissive aperture in the first grid electrode, D (mm) is a spacing between the cathodes and the electron-beam transmissive aperture in the first grid electrode, and E (mm) is a spacing between the first grid electrode and the second grid electrode.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile