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. 04, 1995
Filed:
Jul. 26, 1993
Jae K Lee, Kumi-si, KR;
Goldstar Co., Ltd., Seoul, KR;
Abstract
A method for processing fluorescent material which removes various impurities contained in fluorescent material recovered in developing a fluorescent coating on a fluorescent screen of a color image receiving tube. The recovered fluorescent material can therefore be reused. The method comprises the steps of recovering unexposed fluorescent material which comes off on being developed, dispersing the recovered fluorescent material in water, cleaning the dispersed fluorescent material with an alkali, draining and washing the resultant fluorescent material in water, dehydrating and drying the fluorescent material, and screen-sizing the dried fluorescent material through mesh. Optionally, the cleaned fluorescent material is surface-treated with a colloidal silica (water glass) solution and zinc hydroxide suspension.