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:
Aug. 31, 1999
Filed:
Dec. 26, 1996
Applicant:
Inventor:
Dominique Valentian, Rosny, FR;
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ; F03H / ;
U.S. Cl.
CPC ...
31511181 ; 31511191 ; 60202 ; 3133621 ;
Abstract
A closed electron drift ion source comprising a main annular channel for ionization and acceleration that is open at its downstream end, and that has at least an inside wall constituted by a material that is electrically conductive. Terminal parts taken to a potential that is lower than that of an anode extend the downstream end of the annular channel. The ion source also includes a hollow cathode, ionizable gas feed means associated with the cathode, and with the anode, anode bias means, and means for creating a magnetic field in the main annular channel. The invention is particularly applicable to industrial treatment methods.