Patricia A Morris

US Patent:

6498046, Dec 24, 2002

Filed:

Oct 16, 2001

Appl. No.:

09/978129

Inventors:

Eugene Michael McCarron - Greenville DE
Patricia A. Morris - Montchanin DE

Assignee:

E. I. du Pont de Nemours and Company - Wilmington DE

International Classification:

H01L 2100

US Classification:

438 10

Abstract:

An infrared thermographic technique for rapid parallel screening of compositional arrays of potential chemical sensor materials has been developed. The technique involves applying a voltage bias and the associated current to the sample array during screening. The thermographic response is amplified by the resistance change that occurs with gas adsorption, and is directly monitored as the temperature change associated with I R heating. This technique can also be used to determine n- or p-type character for the semiconductor in question.

US Patent:

6849239, Feb 1, 2005

Filed:

Apr 5, 2002

Appl. No.:

10/117472

Inventors:

Patricia A. Morris - Montchanin DE, US

Assignee:

E. I. du Pont de Nemours and Company - Wilmington DE

International Classification:

G01N 700
G01N 2100
G01N 2700
G01N 3100
G01N 3300

US Classification:

422 98, 422 50, 422 83, 422 88, 422 94, 422 95, 422 96, 422 97, 436 43, 436149, 73 101, 73 102, 73 232, 73 2331, 73 3106

Abstract:

Disclosed herein is a method and apparatus for analyzing, sensing and measuring information related to the concentrations of various gases, including NO, hydrocarbons, carbon monoxide and oxygen, in a multi-component gas system using chemical sensors and chemical sensor arrays. The sensors and sensor arrays use chemo/electro-active materials to analyze and detect the presence of gases.

US Patent:

6960476, Nov 1, 2005

Filed:

Oct 15, 2001

Appl. No.:

09/977791

Inventors:

Patricia A. Morris - Montchanin DE, US

Assignee:

E. I. du Pont de Nemours and Company - Wilmington DE

International Classification:

G01N007/00
G01N021/00
G01N027/00
G01N031/00
G01N033/00

US Classification:

436149, 436 43, 436151, 422 50, 422 83, 422 88, 422 94, 422 95, 422 96, 422 97, 422 98, 73 101, 73 102, 73 232, 73 2331, 73 3106

Abstract:

Disclosed herein is a method and apparatus for analyzing, sensing and measuring the concentrations of various gases, including NO, hydrocarbons, carbon monoxide and oxygen, in a multi-component gas system using chemical sensors and chemical sensor arrays. The sensors and sensor arrays use chemo/electro-active materials to analyze and detect the presence of gases.

US Patent:

7231290, Jun 12, 2007

Filed:

Oct 14, 2003

Appl. No.:

10/406970

Inventors:

John Carl Steichen - Landenberg PA, US
Patricia A. Morris - Montchanin DE, US
John James Barnes - Hockessin DE, US

Assignee:

E. I. du Pont de Nemours and Company - Wilmington DE

International Classification:

F02D 41/14

US Classification:

701109, 701103, 123703, 60276, 700 32

Abstract:

Disclosed herein is a method and apparatus for controlling a process, such as a chemical reaction, that emits a multi-component mixture of gases; and for controlling a device to which is transmitted a product of a chemical reaction that emits a multi-component mixture of gases.

US Patent:

7460958, Dec 2, 2008

Filed:

Oct 4, 2005

Appl. No.:

11/242749

Inventors:

Alicia Marie Walsh - Wilmington DE, US
Kenneth S. Dahl - Wilmington DE, US
Charles E. Miller - Spring TX, US
Patricia A. Morris - Montchanin DE, US
Michael Joseph Piovoso - Wilmington DE, US

Assignee:

E.I. du Pont de Nemours and Company - Wilmington DE

International Classification:

G01N 31/00

US Classification:

702 24

Abstract:

A computer-implemented system and method for converting the resistances of an array of metal oxide sensors into constituents and concentrations of a multi-component gas provided around the sensor array. The method includes preprocessing the resistances of the sensor array; selecting a model that calculates the constituents and concentrations of the multi-component gas based on the preprocessed resistances; and post-processing the constituents and concentrations of the multi-component gas generated by the selected model to provide the actual constituents and concentrations of the multi-component gas.

US Patent:

7575931, Aug 18, 2009

Filed:

Jun 18, 2003

Appl. No.:

10/464141

Inventors:

John Carl Steichen - Landenberg PA, US
Patricia A. Morris - Montchanin DE, US
John James Barnes - Hockessin DE, US

Assignee:

E.I. du Pont de Nemours and Company - Wilmington DE

International Classification:

G01N 33/00
G01N 31/00

US Classification:

436118, 436 9, 436 37, 436106, 436116, 436117

Abstract:

Disclosed herein is a method and apparatus for reducing a nitrogen oxide, and the control thereof.

US Patent:

8323574, Dec 4, 2012

Filed:

Aug 17, 2009

Appl. No.:

12/542210

Inventors:

John Carl Steichen - Landenberg PA, US
Patricia A. Morris - Columbus OH, US
John James Barnes - Hockessin DE, US

Assignee:

E I du Pont de Nemours and Company - Wilmington DE

International Classification:

G01N 27/00

US Classification:

422 83, 60272, 60274, 60282, 60286, 60299, 60301, 60302, 60303, 436118, 422 62, 422 98

Abstract:

Disclosed herein is a method and apparatus for reducing a nitrogen oxide, and the control thereof.

US Patent:

8043566, Oct 25, 2011

Filed:

Jan 12, 2005

Appl. No.:

11/034529

Inventors:

Patricia A. Morris - Montchanin DE, US

Assignee:

E. I. du Pont de Nemours and Company - Wilmington DE

International Classification:

G01N 31/12

US Classification:

422 94, 422 88, 422 90, 422 98, 73 2331, 73 3106, 204424

Abstract:

Disclosed herein is a method and apparatus for analyzing, sensing and measuring information related to the concentrations of various gases, including NO, hydrocarbons, carbon monoxide and oxygen, in a multi-component gas system using chemical sensors and chemical sensor arrays. The sensors and sensor arrays use chemo/electro-active materials to analyze and detect the presence of gases.