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:
Aug. 25, 1987
Filed:
May. 14, 1986
Applicant:
Inventors:
Andras Czeiler, Budapest, HU;
Sandor Lukacs, Verocemaros, HU;
Tamas Palotai, Budapest, HU;
Tibor Lakatos, Budapest, HU;
Gyorgy Bakdos, Budapest, HU;
Assignee:
Tungsram Reszvenytarsasag, Budapest, HU;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ;
U.S. Cl.
CPC ...
25230136 ; 2523 / ; 2523 / ; 427 67 ; 427212 ; 427215 ; 427220 ;
Abstract
The luminescent material(s) optionally composed of more color components are suspended in the solution of active agent(s) and treated with 0.5 to 10% by weight of glass forming acid or a mixture thereof, preferably boric acid or phosphoric acid calculated on the weight of the luminescent material. Then a solution comprising 1 to 15% by weight of aliphatic amines calculated on the weight of the luminescent materials is added and the mixture thus obtained is homogenized.