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:
Oct. 13, 1987
Filed:
Jun. 26, 1986
Applicant:
Inventors:
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
C04B / ; C08J / ; C08K / ;
U.S. Cl.
CPC ...
10628713 ; 106305 ; 1063 / ;
Abstract
In ultramarine blue, or a blue pigmented phosphor in which ultramarine blue is a constituent, a coating of organic silicon compound is formed on the surface of the ultramarine blue pigment. This coating prevents fading of the ultramarine blue during the manufacture of cathode ray tubes.