RP

Randy Purves

NC National Research Council Of Canada: 12 patents #22 of 1,315Top 2%
IO Ionalytics: 9 patents #2 of 11Top 20%
TF Thermo Finnigan: 3 patents #68 of 229Top 30%
Overall (All Time): #175,476 of 4,157,543Top 5%
24
Patents All Time

Issued Patents All Time

Showing 1–24 of 24 patents

Patent #TitleCo-InventorsDate
7550717 Quadrupole FAIMS apparatus Michael W. Belford, Jean-Jacques Dunyach 2009-06-23
7250306 Method for distinguishing between protein variants Roger Guevremont 2007-07-31
7223967 Side-to-side FAIMS apparatus having an analyzer region with non-uniform spacing and method therefore Roger Guevremont, David Barnett, Mark Weir 2007-05-29
7112788 Apparatus and method for controllably affecting the temperature of FAIMS components Roger Guevremont, Govindanunny Thekkadath, Edward Masionis 2006-09-26
7034286 FAIMS apparatus having plural ion inlets and method therefore Roger Guevremont, David Barnett, Kevin Mansfield 2006-04-25
7034289 Segmented side-to-side FAIMS Roger Guevremont, David Barnett 2006-04-25
7026612 FAIMS apparatus and method using carrier gases that contain a trace amount of a dopant species Roger Guevremont, David Barnett, Barbara Ells 2006-04-11
7005633 Method and apparatus for desolvating ions for introduction into a FAIMS analyzer region Roger Guevremont, David Barnett 2006-02-28
6998608 FAIMS with non-destructive detection of selectively transmitted ions Roger Guevremont, David Barnett 2006-02-14
6917036 FAIMS with non-destructive detection of selectively transmitted ions Roger Guevremont, David Barnett 2005-07-12
6831271 Method for separation and enrichment of isotopes in gaseous phase Roger Guevremont, David Barnett 2004-12-14
6825461 FAIMS apparatus and method with ion diverting device Roger Guevremont 2004-11-30
6806466 Parallel plate geometry FAIMS apparatus and method Roger Guevremont 2004-10-19
6799355 Apparatus and method for tandem ICP/FAIMS/MS Roger Guevremont, David Barnett, Gholamreza Javahery, William R. Stott 2004-10-05
6787765 FAIMS with non-destructive detection of selectively transmitted ions Roger Guevremont, David Barnett 2004-09-07
6774360 FAIMS apparatus and method using carrier gas of mixed composition Roger Guevremont, David Barnett 2004-08-10
6770875 Apparatus and method for desolvating and focussing ions for introduction into a mass spectrometer Roger Guevremont 2004-08-03
6753522 FAIMS apparatus having plural ion inlets and method therefore Roger Guevremont, David Barnett 2004-06-22
6713758 Spherical side-to-side FAIMS Roger Guevremont, David Barnett 2004-03-30
6703609 Tandem FAIMS/ion-trapping apparatus and method Roger Guevremont, David Barnett 2004-03-09
6653627 FAIMS apparatus and method with laser-based ionization source Roger Guevremont, David Barnett 2003-11-25
6639212 Method for separation of isomers and different conformations of ions in gaseous phase Roger Guevremont, David Barnett 2003-10-28
6621077 Apparatus and method for atmospheric pressure-3-dimensional ion trapping Roger Guevremont 2003-09-16
6504149 Apparatus and method for desolvating and focussing ions for introduction into a mass spectrometer Roger Guevremont 2003-01-07