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:
Jul. 03, 1990
Filed:
Aug. 22, 1989
Applicant:
Inventors:
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B05D / ; B05D / ; B01D / ;
U.S. Cl.
CPC ...
427345 ; 427 68 ; 427 64 ; 210692 ; 210683 ; 210684 ;
Abstract
A method for regenerating a carbon slurry used to produce a black matrix-type phosphor screen of a cathode ray tube is disclosed, in which excess carbon slurry is collected after the completion of a carbon-coating process onto a cathode ray tube panel. This collected carbon slurry is regenerated by means of an ion-exchange resin.