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:
Jan. 03, 1984
Filed:
Sep. 20, 1982
Applicant:
Inventors:
Norio Koike, Fukaya, JP;
Kunihiro Ikari, Yokosuka, JP;
Assignee:
Tokyo Shibaura Denki Kabushiki Kaisha, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03C / ;
U.S. Cl.
CPC ...
430 28 ; 427 64 ; 427 68 ;
Abstract
There are disclosed a composition for making a picture tube fluorescent screen characterized by essentially consisting of a light-sensitive resin at least having recurring units (1) and (2) represented by the formulas: ##STR1## wherein R and X.sup.- have the same meanings as defined in the specification, and CaS-based phosphor particles which are dispersed in an aqueous medium, and a method of making a picture tube fluorescent screen using the same. According to this invention, it is possible to make a picture tube exhibiting an excellent light emitting efficiency and a contrast by a simple process.