Joseph A Erickson

US Patent:

7550746, Jun 23, 2009

Filed:

May 31, 2007

Appl. No.:

11/809208

Inventors:

Eugene Tokhtuev - Duluth MN, US
Christopher J. Owen - Duluth MN, US
Viktor Slobodyan - Duluth MN, US
Anatoly Skirda - Duluth MN, US
Paul Schilling - Duluth MN, US
Anna Pilipchenko - Duluth MN, US
Paul R. Kraus - Apple Valley MN, US
Katherine M. Sanville - White Bear Lake MN, US
Joseph Phillip Erickson - Cloquet MN, US

Assignee:

Ecolab Inc. - Saint Paul MN

International Classification:

G01N 21/64
G01J 3/00

US Classification:

2504611, 356 51

Abstract:

An ultraviolet (UV) fluorometric sensor measures a chemical concentration in a sample based on the measured fluorescence of the sample. The sensor includes a controller, at least one UV light source, and at least one UV detector. The sensor emits UV light in a wavelength range of 245-265 nm from the light source through the sample in an analytical area. The UV detector measures the fluorescence emission from the sample. The controller transforms output signals from the UV detector into fluorescence values or optical densities for one or more wavelengths in the wavelength range of 265-340 nm. The controller calculates the chemical concentration of the chemical in the sample based on the measured fluorescence emissions.

US Patent:

7652267, Jan 26, 2010

Filed:

May 6, 2009

Appl. No.:

12/436593

Inventors:

Eugene T. Tokhtuev - Duluth MN, US
Christopher J. Owen - Duluth MN, US
Viktor Slobodyan - Duluth MN, US
Anatoly Skirda - Duluth MN, US
Paul Schilling - Duluth MN, US
Anna Pilipchenko - Duluth MN, US
Paul R. Kraus - Apple Valley MN, US
Katherine M. Sanville - White Bear Lake MN, US
Joseph Phillip Erickson - Cloquet MN, US

Assignee:

Ecolab Inc. - St. Paul MN

International Classification:

G01N 21/64
G01N 21/00
G01J 3/00

US Classification:

2504611, 250564, 356 51

Abstract:

An ultraviolet (UV) fluorometric sensor measures a chemical concentration in a sample based on the measured fluorescence of the sample. The sensor includes a controller, at least one UV light source, and at least one UV detector. The sensor emits UV light in a wavelength range of 245-265 nm from the light source through the sample in an analytical area. The UV detector measures the fluorescence emission from the sample. The controller transforms output signals from the UV detector into fluorescence values or optical densities for one or more wavelengths in the wavelength range of 265-340 nm. The controller calculates the chemical concentration of the chemical in the sample based on the measured fluorescence emissions.

US Patent:

7924424, Apr 12, 2011

Filed:

Apr 23, 2009

Appl. No.:

12/428738

Inventors:

Joseph Erickson - Cloquet MN, US
Eugene Tokhtuev - Duluth MN, US
Christopher Owen - Duluth MN, US

Assignee:

Ecolab USA Inc. - Saint Paul MN

International Classification:

G01N 21/00

US Classification:

356432

Abstract:

An optical detection sensor detects presence or absence of a product within a fluid delivery medium. An emitter directs radiation into the fluid delivery medium and detectors detect transmitted light at a plurality of wavelengths. The output of each detector and combinations of outputs of multiple detectors are associated with at least one out-of-product threshold. In addition, a color ratio is established. A controller compares the detector outputs and combination outputs with the associated out-of-product threshold(s). If any of the thresholds are satisfied, the controller compares the color ratio with an associated out-of-product threshold to verify an out-of-product event has occurred and reduce errors due to batch-to-batch variation of the product. The sensor is able to determine presence or absence of a variety of products having different color, transparency or turbidity.

US Patent:

7989780, Aug 2, 2011

Filed:

Dec 8, 2009

Appl. No.:

12/633304

Inventors:

Eugene Tokhtuev - Duluth MN, US
Christopher J. Owen - Duluth MN, US
Viktor Slobodyan - Duluth MN, US
Anatoly Skirda - Duluth MN, US
Paul Schilling - Duluth MN, US
Anna Pilipchenko - Duluth MN, US
Paul R. Kraus - Apple Valley MN, US
Katherine M. Sanville - White Bear Lake MN, US
Joseph Phillip Erickson - Cloquet MN, US

Assignee:

Ecolab Inc. - St. Paul MN

International Classification:

G01N 21/64
G01J 1/42
G01N 21/49

US Classification:

2504611, 250372, 250373, 250573

Abstract:

An ultraviolet (UV) fluorometric sensor measures a chemical concentration in a sample based on the measured fluorescence of the sample. The sensor includes a controller, at least one UV light source, and at least one UV detector. The sensor emits UV light in a wavelength range of 245-265 nm from the light source through the sample in an analytical area. The UV detector measures the fluorescence emission from the sample. The controller transforms output signals from the UV detector into fluorescence values or optical densities for one or more wavelengths in the wavelength range of 265-340 nm. The controller calculates the chemical concentration of the chemical in the sample based on the measured fluorescence emissions.

US Patent:

8004683, Aug 23, 2011

Filed:

Oct 8, 2008

Appl. No.:

12/247743

Inventors:

Eugene Tokhtuev - Duluth MN, US
Christopher J. Owen - Duluth MN, US
Anatoly Skirda - Duluth MN, US
Viktor Slobodyan - Duluth MN, US
William M. Christensen - Hibbing MN, US
Paul Schilling - Duluth MN, US
Joseph P. Erickson - Cloquet MN, US

Assignee:

Ecolab USA Inc. - St. Paul MN

International Classification:

G01N 21/00

US Classification:

356432

Abstract:

An optical detection sensor detects presence or absence of a product within a fluid delivery medium. An emitter directs radiation into the fluid delivery medium. Each of a plurality of detectors detects light within an associated one of a plurality of wavelength ranges transmitted through the fluid delivery medium. The output of each detector is further associated with at least one out-of-product threshold. A controller may further combine detector outputs, such as by multiplication, summation, or other mathematical operation, to produce additional measures of product presence or absence. Each combination output is also associated with at least one out-of-product threshold. The controller compares the output of each detector with the associated out-of-product threshold(s) and compares each combination output with the associated out-of-product threshold(s) to determine presence or absence of product within the fluid delivery medium. The sensor is able to determine presence or absence of a variety of products having different color, transparency or turbidity.

US Patent:

8076154, Dec 13, 2011

Filed:

Feb 12, 2009

Appl. No.:

12/370358

Inventors:

Joseph Erickson - Cloquet MN, US
Eugene Tokhtuev - Duluth MN, US
Christopher Owen - Duluth MN, US
Paul Schilling - Duluth MN, US

Assignee:

Ecolab USA Inc. - Saint Paul MN

International Classification:

G01N 21/00

US Classification:

436164, 436129, 436135, 436166, 436171, 422 681, 422 8205, 422 8209, 374142, 374E13001, 356246

Abstract:

A use composition monitor determines the concentration of peracid and/or peroxide in a use composition using a kinetic assay procedure. A sample mixture containing a sample of the use composition, a diluent and at least one reagent is prepared and analyzed using, for example, an optical detector. Response data obtained by the detector is used to determine the concentrations of peracid and/or peroxide in the use composition based upon an evaluation function determined by a calibration method. The calibration method includes determining coefficients of the evaluation function based upon known concentrations, and measured response data of calibration samples.

US Patent:

8076155, Dec 13, 2011

Filed:

Feb 12, 2009

Appl. No.:

12/370369

Inventors:

Eugene Tokhtuev - Duluth MN, US
Christopher Owen - Duluth MN, US
Paul R. Kraus - Apple Valley MN, US
Joseph Erickson - Cloquet MN, US
Paul Schilling - Duluth MN, US
Daniel Kamben - Duluth MN, US
William Christensen - Hibbing MN, US
Viktor Slobodyan - Duluth MN, US

Assignee:

Ecolab USA Inc. - Saint Paul MN

International Classification:

G01N 21/00

US Classification:

436164, 436139, 436135, 436165, 436166, 436171, 422 681, 422 8205, 422 8209, 374142, 374E13001, 356246

Abstract:

A use composition monitor determines the concentration of peracid and/or peroxide in a use composition using a kinetic assay procedure. A sample mixture containing a sample of the use composition, a diluent and at least one reagent is prepared and analyzed using, for example, an optical detector. Response data obtained by the detector is indicative of the optical absorbance of the sample mixture as a function of time. A processor analyzes the response data to determine a corresponding best fit linear relationship. Depending upon an expected concentration range, the initial absorbance and/or the slope of the best fit equation are used to calculate the concentrations of the peracid and peroxide in the use composition.

US Patent:

8084756, Dec 27, 2011

Filed:

Jul 1, 2011

Appl. No.:

13/175491

Inventors:

Eugene Tokhtuev - Duluth MN, US
Christopher J. Owen - Duluth MN, US
Viktor Slobodyan - Duluth MN, US
Anatoly Skirda - Duluth MN, US
Paul Schilling - Duluth MN, US
Anna Pilipchenko - Duluth MN, US
Paul R. Kraus - Apple Valley MN, US
Katherine M. Sanville - White Bear Lake MN, US
Joseph Phillip Erickson - Cloquet MN, US

Assignee:

Ecolab Inc. - St. Paul MN

International Classification:

G01N 21/64
G01J 1/42
G01N 21/49

US Classification:

2504611, 250372, 250373, 250573

Abstract:

An ultraviolet (UV) fluorometric sensor measures a chemical concentration in a sample based on the measured fluorescence of the sample. The sensor includes a controller, at least one UV light source, and at least one UV detector. The sensor emits UV light in a wavelength range of 245-265 nm from the light source through the sample in an analytical area. The UV detector measures the fluorescence emission from the sample. The controller transforms output signals from the UV detector into fluorescence values or optical densities for one or more wavelengths in the wavelength range of 265-340 nm. The controller calculates the chemical concentration of the chemical in the sample based on the measured fluorescence emissions.