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. 26, 1986
Filed:
May. 28, 1985
Applicant:
Inventors:
Tatsuo Fukuda, Mobara, JP;
Akiyoshi Ikenaga, Mobara, JP;
Assignee:
Futaba Denshi Kogyo K. K., Mobara, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
313481 ; 313495 ; 313553 ;
Abstract
A color fluorescent luminous tube is disclosed which is capable of eliminating a problem of cathode poisoning to significantly lengthen the life of the tube. The color fluorescent luminous tube includes getter devices provided to diffuse a part of a getter material toward luminous cells to deposit it as a film on regions adjacent to the luminous cells, so that the film catches impurity gas generated from the luminous cells due to the impingement of electrons thereupon before it reaches a cathode.