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:
Mar. 16, 2010
Filed:
Jan. 15, 2007
Peter Gefter, South San Francisco, CA (US);
Scott Gehlke, Berkeley, CA (US);
Peter Gefter, South San Francisco, CA (US);
Scott Gehlke, Berkeley, CA (US);
MKS Instruments, Inc., Andover, MA (US);
Abstract
Efficient static neutralization of an electrostatically charged object that has a varying distance from an ion generating source, a varying velocity, a large dimension or any these is achieved by using an ionizing cell or bar having a first electrode and a second electrode. The first electrode for receiving a multi-frequency voltage that has a waveform, and the second electrode separated from the first electrode by a first distance and for use as a reference electrode. The waveform is adjusted during neutralization of a moving object based on at least one attribute of the object.