Jennifer S Brodbelt

US Patent:

47912928, Dec 13, 1988

Filed:

Apr 24, 1986

Appl. No.:

6/855894

Inventors:

Robert G. Cooks - West Lafayette IN
Mark E. Bier - West Lafayette IN
Jennifer S. Brodbelt - West Lafayette IN
James C. Tou - Midland MI
Lemoyne B. Westover - Midland MI

Assignee:

The Dow Chemical Company - Midland MI

International Classification:

H01J 4104

US Classification:

250288

Abstract:

A device for introducing a sample into a mass spectrometer which generally comprises a probe which is connected to the mass spectrometer and a semipermeable capillary tube connected at the end of the probe. The probe includes conduit passageways for permitting bidirectional fluid flow through the probe, and the capillary tube is connected to the end of the probe so as to permit the flow of a fluid containing the sample to be analyzed through the probe and the capillary tube. This fluid flow through the capillary tube will enable at least a portion of the sample to be transferred into the mass spectrometer via diffusion through the capillary tube.

US Patent:

20190295831, Sep 26, 2019

Filed:

Jun 2, 2017

Appl. No.:

16/306238

Inventors:

- San Jose CA, US
- Bremen, DE
- Austin TX, US
Jennifer S. BRODBELT - Austin TX, US
Yevgeniy ZHUK - San Jose CA, US
Jae C. SCHWARTZ - San Jose CA, US

Assignee:

THERMO FINNIGAN LLC - San Jose CA
THERMO FISHER SCIENTIFIC (BREMEN) GMBH - Bremen
BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM - Austin TX

International Classification:

H01J 49/00
H01J 49/14
H01J 49/02

Abstract:

Systems, methods, and devices to dissociate ions using one or more light emitting diodes (LEDs). A mass spectrometer for ion dissociation includes an ion source for providing ions for dissociation, a mass analyzer, and a photodissociation (PD) device. The PD device includes an ion transport device. The ion transport device is configured perform one or more of: transporting the ions through the PD device, and trapping the ions within a region of the PD device. The PD device also includes one or more LEDs positioned to irradiate the ions in the PD device, resulting in fragmentation of the ions.