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:
Jun. 23, 2009
Filed:
Nov. 30, 2006
Applicants:
Michael W. Belford, Santa Clara, CA (US);
Jean Jacques Dunyach, San Jose, CA (US);
Randy W. Purves, Orleans, CA;
Inventors:
Michael W. Belford, Santa Clara, CA (US);
Jean Jacques Dunyach, San Jose, CA (US);
Randy W. Purves, Orleans, CA;
Assignee:
Thermo Finnigan LLC, San Jose, CA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 59/44 (2006.01); H01J 49/00 (2006.01); H01J 49/28 (2006.01);
U.S. Cl.
CPC ...
Abstract
A combined rf-only/FAIMS analyzer is disclosed for use in mass spectrometry and other applications. The disclosed apparatus includes a plurality of flat-plate electrodes arranged around a longitudinal axis of the apparatus so as to define generally a parallelogram in a cross section taken in a plane that is normal to the longitudinal axis. FAIMS is removed electronically when not desired by application of radio frequency (rf) waveforms to the flat-plate electrodes.