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:
Dec. 23, 1986
Filed:
Mar. 23, 1984
Applicant:
Inventors:
Takashi Hase, Odawara, JP;
Hidemi Yoshida, Odawara, JP;
Hideo Suzuki, Odawara, JP;
Morio Hayakawa, Odawara, JP;
Assignee:
Kasei Optonix, Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ; C09K / ;
U.S. Cl.
CPC ...
313467 ; 2523 / ;
Abstract
A monochrome display cathode ray tube which comprises a white emitting fluorescent screen formed on a face plate facing an electron gun to emit cathode rays, said white emitting fluorescent screen being composed essentially of a phosphor mixture comprising from 40 to 70% by weight of a long after-glow red emitting europium-activated indium borate phosphor, from 10 to 40% by weight of a long after-glow green emitting manganese-activated zinc silicate phosphor and from 10 to 50% by weight of a long after-glow blue emitting silver-activated zinc sulfide phosphor.