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:
Oct. 20, 1992
Filed:
Sep. 13, 1990
Applicant:
Inventors:
Norman W Parker, Wheaton, IL (US);
Robert C Kane, Woodstock, IL (US);
Assignee:
Motorola Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ;
U.S. Cl.
CPC ...
3151691 ; 313309 ; 313336 ;
Abstract
A cold-cathode field emission device controls electron emission by using a current source coupled to the emitter. The open circuit voltage of the current source is less than the voltage at which the FED would emit electrons. Application of an accelerating potential on the gate enables electron emission. Electron emission from the FED is governed by the current source.
Parker, Norman. (1992). Cold-cathode field emission device employing a current source means (U.S. Patent No. 5157309). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5157309
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile