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. 23, 1985
Filed:
Aug. 16, 1982
Applicant:
Inventors:
Yasukazu Morita, Mobara, JP;
Naomitsu Watanabe, Mobara, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D / ; B05D / ;
U.S. Cl.
CPC ...
427 65 ; 427 68 ; 427 73 ;
Abstract
A phosphor screen good in quality without greatly lowering brightness can be produced on a cathode-ray tube faceplate by the settling process wherein there is used a suspension of phosphor particles which are susceptible to hydrolysis or dissolution prepared by using an alkaline aqueous solution having a pH of 10 to 13 and if necessary with a small amount of water glass, or the above-mentioned phosphor suspension is poured into a cushion solution having a pH of 10 to 13, said cushion solution being able to contain a small amount of water glass.