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:
May. 14, 1991
Filed:
Jul. 10, 1989
Applicant:
Inventors:
Kinjiro Sano, Nagaokakyo, JP;
Toyokazu Kamata, Nagaokakyo, JP;
Keiji Fukuyama, Kamakura, JP;
Masato Saito, Kamakura, JP;
Keiji Watanabe, Kamakura, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D / ;
U.S. Cl.
CPC ...
427 77 ; 4271262 ; 4271263 ;
Abstract
A cathode for an electron tube in accordance with the present invention comprises: a base (2) containing not only nickel as a major element but also a reducing agent; a layer (3) of an electron-emissive substance which is applied to the base (2) and contains not only an alkaline earth metal oxide as a principal component but also a scandium oxide; and a heater for heating the layer (3).
Sano, Kinjiro. (1991). Cathode for electron tube and manufacturing method thereof (U.S. Patent No. 5015497). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5015497
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile