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:
Nov. 23, 2010
Filed:
Oct. 28, 2008
Applicant:
John Vandermey, Georgetown, CA;
Inventor:
John Vandermey, Georgetown, CA;
Assignee:
DH Technologies Development Pte. Ltd., Singapore, SG;
Primary Examiner:
Int. Cl.
CPC ...
H01J 49/00 (2006.01); B01D 59/44 (2006.01);
U.S. Cl.
CPC ...
Abstract
In various embodiments the present teachings provide high-voltage, asymmetric-waveform power supplies useful for, e.g., differential mobility spectrometry. In various embodiments, provided are high-voltage, asymmetric-waveform power supplies for high-field asymmetric waveform ion mass spectrometers having field values greater than about 5,000 volts cmand varying in time at rates greater than about 600 kilohertz (KHz).