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:
Apr. 30, 1991
Filed:
Dec. 22, 1989
Applicant:
Inventors:
Gary M Atkinson, Santa Monica, CA (US);
M DuChesne Courtney, Mission Hills, CA (US);
Assignee:
Other;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ; H03K / ;
U.S. Cl.
CPC ...
313336 ; 313309 ; 313351 ; 307304 ;
Abstract
A vacuum FET is designed to perform higher level functions such as logic AND, EXCLUSIVE OR (NOR), demultiplexing, or frequency multiplication with a single device. These higher level functions are accomplished by dividing the collector of the vacuum FET into multiple segments and by providing steering electrodes just above the emitter to deflect the field emission current to the various collector segments. The collector pattern, together with the configuration of the applied signals to the device, determines the higher order function performed.
Published as: