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. 17, 2004
Filed:
May. 09, 2001
Applicant:
Inventor:
Leslie W. Partridge, Davis, CA (US);
Assignee:
Ion Systems, Berkeley, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01T 2/300 ;
U.S. Cl.
CPC ...
H01T 2/300 ;
Abstract
Air ionization apparatus includes a plurality of air ionizing electrodes connected to a source of high ionizing voltages, and includes a bias source connected to supply bias voltage to a reference electrode positioned near the air ionizing electrodes to alter the field gradients thereabout to selectively enhance production of positive or negative air ions in response to levels and polarity of bias voltage supplied to the reference electrode.