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:
Dec. 26, 1989
Filed:
Apr. 04, 1989
Applicant:
Inventors:
Franz Prein, Neckargemund, DE;
Jurgen Wiegand, Eppelheim, DE;
Peter Frey, Pforzheim, DE;
Norbert Klink, Pforzheim, DE;
Assignees:
Eltro GmbH, both of, DE;
Doduco KG, both of, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
313633 ; 313309 ; 3133 / ;
Abstract
A surface for electrical discharge for incorporation in a gas discharge chamber and designed to produce a uniform distribution of the field strength factor, and an increase in the photon and/or the electron density. This is achieved by employing a microstructure combining at least two materials of different physical properties and having a geometry which increases electron emission.