David S Kidwell, Age 846 Severn Ave, Annapolis, MD 21403

6443892, Sep 3, 2002

Sep 28, 2000

09/671167

David A. Kidwell - Alexandria VA

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

A61B 500

600362, 600346

The invention is useful for providing sweat collecting devices for the detection of chemicals or biochemicals in the perspiration of a living subject while reducing drug contamination from without (external sources), and for detecting tampering of the sweat collection device. The invention also provides a method for using the sweat collecting device which reduces and identifies prior chemical or biochemical contamination on the skin of the tested subject.

6780307, Aug 24, 2004

Sep 9, 2002

10/237074

David A. Kidwell - Alexandria VA

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

G01N 27333

205792, 205787, 205789, 2057895, 204418, 204415, 204435

A hand-held portable drug monitoring system to detect and quantitate cocaine and other organic drugs in saliva, sweat, and surface wipes by using an ion selective electrode or an array of ion selective electrodes. The ion selective electrode has a cast membrane reference electrode and a sensing electrode with a hydrophobic polymer, a plasticizer, and an ionophore selective for the organic drug to be tested. The ion selective electrode can be connected to a converter that coverts a voltage reading from the ion selective electrode to a quantitative drug concentration level. Also disclosed is the related method of using an ion selective electrode to detect an organic drug in saliva, sweat, and surface wipes, the method of testing electrical contact in an ion selective electrode, and the method of making a cast membrane reference electrode.

7618523, Nov 17, 2009

Apr 26, 2004

10/833636

David A. Kidwell - Alexandria VA, US

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

G01N 27/30

204435, 427 213

A hand-held portable drug monitoring system to detect and quantitate cocaine and other organic drugs in saliva, sweat, and surface wipes by using an ion selective electrode or an array of ion selective electrodes. The ion selective electrode has a cast membrane reference electrode and a sensing electrode with a hydrophobic polymer, a plasticizer, and an ionophore selective for the organic drug to be tested. The ion selective electrode can be connected to a converter that coverts a voltage reading from the ion selective electrode to a quantitative drug concentration level. Also disclosed is the related method of using an ion selective electrode to detect an organic drug in saliva, sweat, and surface wipes, the method of testing electrical contact in an ion selective electrode, and the method of making a cast membrane reference electrode.

7795583, Sep 14, 2010

Oct 6, 2006

11/539380

Richard F Hubbard - Burke VA, US
Arne W Fliflet - Alexandria VA, US
Jeffrey H Bowles - Burke VA, US
David A Kidwell - Alexandria VA, US
Melissa K. Hornstein - Washington DC, US
Geoffrey B. Smith - Manassas VA, US
David Lewis, III - Mountain View CA, US

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

G01J 5/00

2503381

A long-range active thermal imaging system includes an electromagnetic radiation source in the range of from about 10 GHz to about 500 GHz; a beam controller for receiving and retransmitting the electromagnetic radiation in a desired direction toward and onto a surface of a target, thereby heating the target and producing an infrared radiation emission from the target surface; and an infrared imager, e. g. an infrared camera coupled to a processor and display, for receiving the target's infrared radiation emission and generating a thermal image of the target. The radiation source may be selected such that the radiation penetrates into the target to provide a thermal signature, e. g. from subsurface features or objects. The thermal signature exhibits rapid changes that can be monitored in real time. This may allow surface or subsurface details or objects to be detected that would not otherwise be apparent.

8440062, May 14, 2013

Mar 11, 2009

12/402271

David A Kidwell - Alexandria VA, US

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

G01N 27/403

204435, 422 8201, 422 8202, 422 8203, 422 8205

A miniature, lightweight, inexpensive, environmental monitoring system containing a number of sensors that can simultaneously and continuously monitor fluorescence, absorbance, conductivity, temperature, and several ions. Sensors that monitor similar parameters can cross-check data to increase the likelihood that a problem with the water will be discovered.

8637270, Jan 28, 2014

Nov 13, 2009

12/618180

David A Kidwell - Alexandria VA, US

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

C12Q 1/04
G01N 21/53
G01N 33/533

435 29, 422 8205, 436501

The present invention is generally directed to a fluidized bed detector for continuous detection of biological and chemical materials comprising a fluidized bed of detecting elements suspended in a continuous flow system wherein the detecting elements remain in the system when a first force trying to move the detecting elements to the bottom of the system is balanced with a second opposing force of a flowing gas or liquid trying to move detecting elements to the top of the system and wherein the presence of a target molecule in the flowing gas or liquid disrupts the balance of the first and second forces causing the detecting element to exit the system. The release of the detecting element indicates the presence of the target molecule and may be captured, concentrated, or both for further evaluation by other assays or other means. Also disclosed is the related method of detecting biological and chemical materials using a fluidized bed detector.

2006008, Apr 20, 2006

Dec 3, 2004

11/009849

David Kidwell - Alexandria VA, US

G01N 27/26

204415000, 204400000

A miniature, lightweight, inexpensive, environmental monitoring system containing a number of sensors that can simultaneously and continuously monitor fluorescence, absorbance, conductivity, temperature, and several ions. Sensors that monitor similar parameters can cross-check data to increase the likelihood that a problem with the water will be discovered.

2011007, Mar 31, 2011

Sep 29, 2010

12/893325

David A. Kidwell - Alexandria VA, US

B01J 23/00
B01J 23/44
B01J 23/42
B01J 29/04
B01J 21/04
B01J 8/02

502 60, 502300, 502339, 502355, 422211, 977840

A method for producing excess enthalpy by impregnating metallic precursors on an oxide support that reduces sintering and particle growth; drying the impregnated support at a temperature where the particle growth is minimal; reducing the metallic precursors at a second temperature where the particle growth results in supported metallic particles 2 nm or less in size; and pressurizing the supported metallic particles in the presence of deuterium. The metal particles may comprise palladium, platinum, mixtures thereof, or mixtures of palladium and/or platinum with other elements. Also disclosed is a method for measuring excess enthalpy by placing a test material in a pressure vessel; heating the pressure vessel; evacuating the pressure vessel; introducing deuterium, hydrogen, or both into the pressure vessel; measuring the enthalpy generated during pressurization; again evacuating the pressure vessel; and measuring the enthalpy used during depressurization.