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. 21, 1989
Filed:
Oct. 16, 1987
Applicant:
Inventors:
Johannes M Compen, Eindhoven, NL;
Wilhelmus M Van Kemenade, Eindhoven, NL;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ;
U.S. Cl.
CPC ...
313479 ; 427 64 ; 427106 ; 427122 ;
Abstract
The invention relates to an electron beam tube for displaying color television pictures and to a method of manufacturing same, in which a graphite suspension substantially free from alkali metal ions and comprising colloidal silicon oxide is used for making contact between the color selection electrode and the phosphor pattern on the display window. This suspension enables a method of manufacture which is simpler than the conventional methods.