Charles L Patton

US Patent:

7157059, Jan 2, 2007

Filed:

Sep 18, 2002

Appl. No.:

10/251696

Inventors:

Charles Johnston Patton - Evergreen CO, US
Peter Freeman Rogerson - Golden CO, US

Assignee:

The United States of America as represented by the Secretary of the Interior - Washington DC

International Classification:

B01J 8/18
B01D 47/00
B01D 47/16
B01F 3/04
G01N 15/06

US Classification:

422139, 261 94, 261100, 261103, 261123, 422 681, 422202

Abstract:

A nitrate reduction device has a cadmium structure forming a plurality of longitudinal channels within a flow chamber, which may be formed by a plurality of wires. The device is used to reduce nitrate to a final nitrite product for analysis.

US Patent:

7704457, Apr 27, 2010

Filed:

Nov 14, 2006

Appl. No.:

11/599571

Inventors:

Charles J. Patton - Evergreen CO, US

International Classification:

G01N 21/00
G01N 31/00
G01N 21/64
G01N 35/00
G01N 35/08

US Classification:

422 63, 422 67, 422 81, 422 8205, 422 8207, 436 43, 436 52, 436 55, 436164, 436172, 436180

Abstract:

An automated apparatus and method for analyzing liquid samples by forming discrete sample aliquots (boluses) in an elongated conduit which contains a hydrophobic carrier liquid. Aliquots may be analyzed by adding at least one reagent to the sample aliquot that reacts selectively with an analyte contained therein. The reaction product, which is selective for the analyte of interest and proportional to its concentration, is measured with an appropriate detector. Intrinsic sample properties of the sample may also be measured without the need for adding chemical reagents. The invention enables simple and accurate testing of samples using time honored wet-chemical analysis methods in microliter volume regimes while producing remarkably small volumes of waste.

US Patent:

20100159601, Jun 24, 2010

Filed:

Feb 19, 2010

Appl. No.:

12/660033

Inventors:

Charles J. Patton - Evergreen CO, US

International Classification:

G01N 35/08
G01N 33/18
G01N 21/64
G01J 1/42

US Classification:

436 43, 73 6141, 2504591, 250372

Abstract:

An automated apparatus and method for analyzing liquid samples by forming discrete sample aliquots (boluses) in an elongated conduit which contains a hydrophobic carrier liquid. Aliquots may be analyzed by adding at least one reagent to the sample aliquot that reacts selectively with an analyte contained therein. The reaction product, which is selective for the analyte of interest and proportional to its concentration, is measured with an appropriate detector. Intrinsic sample properties of the sample may also be measured without the need for adding chemical reagents. The invention enables simple and accurate testing of samples using time honored wet-chemical analysis methods in microliter volume regimes while producing remarkably small volumes of waste.