Gregory L Collins

US Patent:

6579722, Jun 17, 2003

Filed:

Jul 10, 1995

Appl. No.:

08/500277

Inventors:

Gregory Earl Collins - Waldorf MD

Assignee:

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

International Classification:

G01N 2176

US Classification:

436172, 436116, 436 68, 422 83, 422 8205, 356 39

Abstract:

A solid phase chemical sensor includes a polymer film which has a chemiluminescent reagent immobilized therein. The polymer film and chemiluminescent reagent are chosen to significantly enhance the selectivity of the sensor to the analyte in the gaseous phase to which the sensor is exposed. The sensor is then positioned so that, when exposed to the gaseous mixture, any chemiluminescence generated will be detected by a photomultiplier tube or other photoelectric device, such as a photodiode. The sensor is particularly useful in the detection of O , N H , SO , NO , and halogenated hydrocarbons.

US Patent:

7904057, Mar 8, 2011

Filed:

Apr 13, 2006

Appl. No.:

11/403365

Inventors:

William Toth - Vienna VA, US
Gregory Collins - Alexandria VA, US

Assignee:

Nextel Communications Inc. - Reston VA

International Classification:

H04M 1/725
H04B 7/00

US Classification:

4554121, 4554122, 455413, 455518, 455519, 455521, 455466, 455 902

Abstract:

A communication system that facilitates the transmission of audio messages via dispatch communications to subscriber units as members of a distribution list. The system includes a network device (e. g. , a message application server) adapted to receive a dispatch communication including an audio message from an originating subscriber unit intended for member(s) of a distribution list; post the audio message for retrieval by the members of the distribution list; send respective notifications of the posting of the audio message to the members of the distribution list; receive requests for the audio message from the members of the distribution list; and send respective dispatch communications including the audio message to the requesting members of the distribution list.

US Patent:

8589203, Nov 19, 2013

Filed:

Jan 5, 2009

Appl. No.:

12/348731

Inventors:

Gregory D. Collins - Alexandria VA, US
Thomas Torbinski - Leesburg VA, US

Assignee:

Sprint Communications Company L.P. - Overland Park KS

International Classification:

G06Q 10/00

US Classification:

705 712, 705 722, 705 723

Abstract:

A system is provided for project pipeline risk management. A distribution tool generates project resource distributions for associated organizations, wherein each of the project resource distributions comprises allocations of project resources to project phases and corresponds to one of multiple projects. The risk tool identifies risks, wherein each of the identified risks corresponds to one of the projects. The risk tool determines an initial risk exposure for each project based on an initial probability for each identified risk and an initial impact severity for each identified risk. The risk tool determines an updated risk exposure for each project based on an updated probability for each identified risk and an updated impact severity for each identified risk. The distribution tool generates updated project resource distributions based on the completed project information and a difference between the initial risk exposure and the updated risk exposure for each project.

US Patent:

57190615, Feb 17, 1998

Filed:

Oct 20, 1994

Appl. No.:

8/326518

Inventors:

Gregory E. Collins - Waldorf MD

Assignee:

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

International Classification:

G01N 3322
G01N 3300

US Classification:

436171

Abstract:

A method and apparatus for the detection of hydrazine, monomethylhydrazine, 1,1-dimethylhydrazine in air (or other gas medium) or in an aqueous solution. The detection is accomplished by introducing a stream of air, or other gas medium, or aqueous solution suspected of containing hydrazine, monomethylhydrazine, 1,1-dimethylhydrazine or mixtures thereof into a pH controlled reagent solution containing an aromatic dicarboxaldehyde to react with the hydrazine, monomethylhydrazine, 1,1-dimethylhydrazine or mixtures thereof, respectively, and by exposing the reacted reagent solution to an excitation wavelength range and monitoring an emission from the exposed reagent solution at an emission wavelength range to detect the presence of a hydrazine derivative, monomethylhydrazine derivative, 1,1-dimethylhydrazine derivative, or mixtures thereof (i. e. a derivative formed by the reaction between hydrazine, monomethylhydrazine, 1,1-dimethylhydrazine and the aromatic dicarboxaldehyde) indicating the presence of hydrazine, monomethylhydrazine, 1,1-dimethylhydrazine or mixtures thereof within the stream of air or other gas medium or aqueous solution.

US Patent:

20180304263, Oct 25, 2018

Filed:

May 23, 2018

Appl. No.:

15/986987

Inventors:

- Arlington VA, US
Sarah J. R. Staton - Washington DC, US
Alexander V. Terray - Alexandria VA, US
Gregory E. Collins - Huntingtown MD, US

International Classification:

B01L 3/00
B81B 7/02
G01N 15/10

Abstract:

The combined value of integrating optical forces and electrokinetics allows for the pooled separation vectors of each to be applied, providing for separation based on combinations of features such as size, shape, refractive index, charge, charge distribution, charge mobility, permittivity, and deformability. The interplay of these separation vectors allow for the selective manipulation of analytes with a finer degree of variation. Embodiments include methods of method of separating particles in a microfluidic channel using a device comprising a microfluidic channel, a source of laser light focused by an optic into the microfluidic channel, and a source of electrical field operationally connected to the microfluidic channel via electrodes so that the laser light and the electrical field to act jointly on the particles in the microfluidic channel. Other devices and methods are disclosed.

US Patent:

20180304264, Oct 25, 2018

Filed:

May 23, 2018

Appl. No.:

15/987035

Inventors:

- Arlington VA, US
Sarah J. R. Staton - Washington DC, US
Alexander V. Terray - Alexandria VA, US
Gregory E. Collins - Huntingtown MD, US

International Classification:

B01L 3/00
B81B 7/02
G01N 15/10

Abstract:

The combined value of integrating optical forces and electrokinetics allows for the pooled separation vectors of each to be applied, providing for separation based on combinations of features such as size, shape, refractive index, charge, charge distribution, charge mobility, permittivity, and deformability. The interplay of these separation vectors allow for the selective manipulation of analytes with a finer degree of variation. Embodiments include methods of method of separating particles in a microfluidic channel using a device comprising a microfluidic channel, a source of laser light focused by an optic into the microfluidic channel, and a source of electrical field operationally connected to the microfluidic channel via electrodes so that the laser light and the electrical field to act jointly on the particles in the microfluidic channel. Other devices and methods are disclosed.

US Patent:

20180304265, Oct 25, 2018

Filed:

May 23, 2018

Appl. No.:

15/987047

Inventors:

- Arlington VA, US
Sarah J. R. Staton - Washington DC, US
Alexander V. Terray - Alexandria VA, US
Gregory E. Collins - Huntingtown MD, US

International Classification:

B01L 3/00
B81B 7/02
G01N 15/10

Abstract:

The combined value of integrating optical forces and electrokinetics allows for the pooled separation vectors of each to be applied, providing for separation based on combinations of features such as size, shape, refractive index, charge, charge distribution, charge mobility, permittivity, and deformability. The interplay of these separation vectors allow for the selective manipulation of analytes with a finer degree of variation. Embodiments include methods of method of separating particles in a microfluidic channel using a device comprising a microfluidic channel, a source of laser light focused by an optic into the microfluidic channel, and a source of electrical field operationally connected to the microfluidic channel via electrodes so that the laser light and the electrical field to act jointly on the particles in the microfluidic channel. Other devices and methods are disclosed.

US Patent:

20160332161, Nov 17, 2016

Filed:

Jun 15, 2016

Appl. No.:

15/183531

Inventors:

- Arlington VA, US
Sarah J. R. Staton - Washington DC, US
Alexander V. Terray - Alexandria VA, US
Gregory E. Collins - Huntingtown MD, US

International Classification:

B01L 3/00

Abstract:

The combined value of integrating optical forces and electrokinetics allows for the pooled separation vectors of each to be applied, providing for separation based on combinations of features such as size, shape, refractive index, charge, charge distribution, charge mobility, permittivity, and deformability. The interplay of these separation vectors allow for the selective manipulation of analytes with a finer degree of variation. Embodiments include methods of method of separating particles in a microfluidic channel using a device comprising a microfluidic channel, a source of laser light focused by an optic into the microfluidic channel, and a source of electrical field operationally connected to the microfluidic channel via electrodes so that the laser light and the electrical field to act jointly on the particles in the microfluidic channel. Other devices and methods are disclosed.