Dan Michael Leatzow
Engineers in Kalispell, MT
License number
Colorado 56379
Issued Date
Jul 6, 1994
Renew Date
Jul 6, 1994
Type
Engineer Intern
Address
Address
PO Box 1442, Kalispell, MT 59903
Professional information
Electrophoresis Devices And Methods For Focusing Charged Analytes
US Patent:
8142630, Mar 27, 2012
Filed:
May 19, 2004
Appl. No.:
10/557582
Inventors:
David Strand - Sherborn MA, US
Dan M. Leatzow - Kalispell MT, US
Cornelius F. Ivory - Pullman WA, US
Dan M. Leatzow - Kalispell MT, US
Cornelius F. Ivory - Pullman WA, US
Assignee:
Protasis Corporation - Marlborough MA
Washington State University - Pullman WA
Washington State University - Pullman WA
International Classification:
G01N 27/447, G01N 27/453
US Classification:
204451, 204601, 204605, 204600, 204450
Abstract:
Devices are provided for separating and focusing charged analytes, comprising a separation chamber and two or more electrodes, for example, an electrode array. A membrane separates the separation chamber and the electrodes. The separation chamber of the device is configured, that is, the separation chamber has a shaped geometry, which serves to induce a gradient in an electric field generated by the electrodes in the electrode chamber. Optionally, molecular sieve is included in the separation chamber that is operative to shift the location at which a stationary focused band of a charged analyte forms under a given set of focusing process parameters. Methods are provided for separating and focusing charged analytes comprising introducing a first fluid comprising at least one charged analyte into the separation chamber of a device as just described, applying an electric field gradient to the charged analyte to focus the charged analyte in the electric field gradient.
Sample Analysis Systems, Devices, And Associated Methods Of Operation
US Patent:
2013017, Jul 11, 2013
Filed:
Apr 12, 2012
Appl. No.:
13/445228
Inventors:
Cornelius F. Ivory - Pullman WA, US
Dan M. Leatzow - Kalispell MT, US
Dan M. Leatzow - Kalispell MT, US
Assignee:
WASHINGTON STATE UNIVERSITY RESEARCH FOUNDATION - Pullman WA
International Classification:
G01N 27/447
US Classification:
204547, 204600, 204601, 204450
Abstract:
Embodiments of analysis systems, electrophoresis devices, and associated methods of analysis are described herein. In one embodiment, a method of analyzing a sample containing an electrolyte includes sequentially introducing a leading electrolyte, a sample electrolyte, and a trailing electrolyte into a extraction channel carried by a substrate. The extraction channel has a constriction in cross-sectional area. The method also includes applying an electrical field to separate components of the sample electrolyte into stacks and to concentrate the separated components by forcing the sample electrolyte to migrate through the constriction in the extraction channel. Thereafter, the applied electrical field is removed and the separated and concentrated components of the sample are detected in a detection channel carried by the substrate.
Electrophoretic Devices, Instruments And Systems Including Same
US Patent:
2007023, Oct 11, 2007
Filed:
Dec 1, 2003
Appl. No.:
10/537197
Inventors:
David Strand - Sherborn MA, US
Dan Leatzow - Kalispell MT, US
Dan Leatzow - Kalispell MT, US
Assignee:
Protasis Corporation - Marlborough MA
International Classification:
B01D 57/02
US Classification:
204518000
Abstract:
Devices, systems and methods are provided for processing fluid samples containing one or more analytes. In certain examples, an electrophoretic device comprises a separation chamber and an electrode chamber, each of which may be uniform or non-uniform. The electrode chamber includes two or more electrodes or may include an electrode array. Molecular sieve may be included in the separation chamber, and the molecular sieve is operative to shift the location at which a stationary focused band of a charged analyte forms under a given set of focusing process parameters. Such systems are especially suitable for linking up analytical instruments in a hyphenated fashion, particularly where the instruments have differing system parameters.
Fluid Logic Device
US Patent:
8037902, Oct 18, 2011
Filed:
May 19, 2004
Appl. No.:
10/557916
Inventors:
David Strand - Sherborn MA, US
Dan M. Leatzow - Kalispell MT, US
Dan M. Leatzow - Kalispell MT, US
Assignee:
Protasis Corporation - Marlborough MA
International Classification:
G01N 27/00
US Classification:
137827, 204601
Abstract:
Novel fluid logic devices are disclosed. Certain examples of the fluid logic devices include two or more fluid logic gates that are each operative to select and/or direct analytes in a sample into one or more fluid flow channels in communication with the fluid logic gates. The fluid logic device can be part of a larger system, such as a chromatography system, or can be stand-alone device.