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:
Feb. 21, 1995
Filed:
Dec. 21, 1992
Applicant:
Inventors:
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
313309 ; 313336 ; 313351 ;
Abstract
An electron emitting device with an insulating layer on a substrate. The insulating layer has a hollow part in which a conical electrode is formed. A conductive layer on the insulating layer has an aperture on the hollow part of the insulating layer. The hollow part is formed by etching utilizing an ion beam.
Watanabe, Nobuo. (1995). Electron emitting device, method for producing the same and display (U.S. Patent No. 5391956). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5391956
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile