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. 26, 1998
Filed:
Sep. 30, 1992
Applicant:
Inventors:
Assignee:
Kabushiki Kaisha Kobe Seiko Sho, Kobe, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
345 75 ; 313311 ; 445 50 ;
Abstract
Disclosed is planar and vertical cold cathode emitter elements including an semiconducting diamond emitter portion having a high thermal resistance and a high breakdown voltage, thereby suppressing the deterioration of the electron emission characteristics and enabling the operation with a high electric power.