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. 07, 1987
Filed:
Dec. 12, 1984
Applicant:
Inventor:
Donald L Say, Waterloo, NY (US);
Assignee:
North American Philips Consumer Electronics Corp., New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
313414 ;
Abstract
In a color cathode ray tube having an in-line electron gun with overlapping CFF lenses, the small openings of the focusing electrode apertures are critically enlarged to balance the asymmetry of the lensing field caused by the overlap, and beam spot distortion due to field asymmetries in the focus region is eliminated. Enlargement is achieved by elongating the openings in a direction normal to the in-line plane, and widening the outer openings.
Say, Donald. (1987). Color cathode ray tube in-line electron gun focusing electrode with (U.S. Patent No. 4656391). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4656391
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile