Paul W Hendricks

US Patent:

20160260594, Sep 8, 2016

Filed:

Apr 3, 2015

Appl. No.:

14/677996

Inventors:

Paul I. Hendricks - Los Gatos CA, US

Assignee:

BAYSPEC, INC. - San Jose CA

International Classification:

H01J 49/00
H01J 49/04
H01J 49/06
H01J 49/24

Abstract:

An inlet and vacuum system for a portable, or handheld, mass spectrometer. The mass spectrometer comprises three vacuum chambers, which includes two ion funnels connected in series in the first two vacuum chambers, followed by a mass spectrometer analyzer and ion detector in the third vacuum chamber. The ion funnels are arranged with their central axes aligned in a linear fashion. The sample inlet to the portable mass spectrometer is from an external ion source, typically operating at atmospheric, or near atmospheric, pressure. An improvement in desolvation, and a reduction in the injection of neutrals, excited state molecules, and particulates into the analyzer is achieved by incorporating a lateral offset for the inlet capillary used to transfer ions into the first injection funnel. Additional efficiency for ion focusing is achieved by replacing the ion guide, typically used with atmospheric pressure ionization sources, with an additional ion funnel.

US Patent:

20160071709, Mar 10, 2016

Filed:

Sep 10, 2014

Appl. No.:

14/483098

Inventors:

Paul I. Hendricks - Los Gatos CA, US

Assignee:

BAYSPEC, INC. - San Jose CA

International Classification:

H01J 49/00
H01J 49/06

Abstract:

Apparatus and methods for controlling miniaturized arrays of ion traps, including cylindrical ion traps, rectilinear ion traps, and linear ion traps. Improved methods for applying supplemental AC signals to individual ion traps in an ion trap array. Methods of organizing ion trap arrays and operating the arrays in a manner to improve sensitivity, resolution and mass accuracy. Techniques for performing simultaneous detection of multiple compounds from ion trap arrays. Optimization of ion trap performance by dynamic optimization or adjustment of RF trapping frequency and voltage amplitude.