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:
Mar. 20, 2001
Filed:
Aug. 19, 1998
Applicant:
Inventor:
Tatsuya Yamazaki, Fukaya, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kanagawa-ken, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 2/907 ;
U.S. Cl.
CPC ...
H01J 2/907 ;
Abstract
Electron beam passage hole arrays are arrayed on an effective surface of a shadow mask along the Y-axis direction in accordance with a predetermined quartic polynomial. The X-axis direction size of each of electron beam passage holes constituting the electron beam passage hole array is defined on the basis of the quartic polynomial such that the ratio of the hole size to the interval between electron beam passage hole arrays adjacent to each other becomes constant.
Yamazaki, Tatsuya. (2001). Color cathode ray tube with graded shadow mask apertures (U.S. Patent No. 6204599). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6204599
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile