Kevin P Mcevoy

US Patent:

7700003, Apr 20, 2010

Filed:

Jan 30, 2007

Appl. No.:

11/668900

Inventors:

Sergio Paulo Martins Loureiro - Saratoga Springs NY, US
Alok Mani Srivastava - Niskayuna NY, US
Kevin Paul McEvoy - Ballston Spa NY, US
Venkat Subramaniam Venkataramani - Clifton Park NY, US
Steven Jude Duclos - Clifton Park NY, US
James Scott Vartuli - Rexford NY, US
Carl Joshua Vess - Latham NY, US

Assignee:

General Electric Company - Niskayuna NY

International Classification:

C09K 11/66
G01T 1/20

US Classification:

2523014H, 250361 R

Abstract:

A method is provided that includes heating a powder to a temperature that is below the melting point of the scintillator composition but is sufficiently high to form a coherent mass. The powder includes a scintillator composition. The coherent mass is polycrystalline and has a pulse height resolution that is less than 20 percent at 662 kilo electron volts; a light yield of more than 5000 photons per milli electron volt; or both a pulse height resolution that is less than 20 percent at 662 kilo electron volts and a light yield of more than 5000 photons per milli electron. A sintered body is provided also.

US Patent:

7720321, May 18, 2010

Filed:

Jul 20, 2007

Appl. No.:

11/780701

Inventors:

James Scott Vartuli - Rexford NY, US
Kenneth Sherwood Bousman - Albany NY, US
Kung-Li Deng - Waterford NY, US
Kevin Paul McEvoy - Ballston Spa NY, US
Hua Xia - Altamont NY, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

G02B 6/00

US Classification:

385 12

Abstract:

A fiber optic sensor including a fiber having a modified surface integral with the fiber wherein the modified surface includes an open pore network with optical agents dispersed within the open pores of the open pore network. Methods for preparing the fiber optic sensor are also provided. The fiber optic sensors can withstand high temperatures and harsh environments.

US Patent:

7879284, Feb 1, 2011

Filed:

Jan 29, 2007

Appl. No.:

11/699140

Inventors:

Sergio Paulo Martins Loureiro - Saratoga Springs NY, US
Venkat Subramaniam Venkataramani - Clifton Park NY, US
Lucas Clarke - Brussels, BE
Kevin P. McEvoy - Ballston Spa NY, US
Carl Joshua Vess - Latham NY, US
Thomas McNulty - Ballston Lake NY, US
Steven Jude Duclos - Clifton Park NY, US
Adrian Ivan - Niskayuna NY, US
Patricia A. Hubbard - Olmsted Falls OH, US

Assignee:

Momentive Performance Materials Inc. - Albany NY

International Classification:

B29C 67/04
B28B 3/00
C04B 35/645

US Classification:

264667, 25037011, 264319, 264332, 264125

Abstract:

A method of making a cubic halide scintillator material includes pressing a powder mixture of cubic halide and at least one activator under conditions of pressure, temperature, residence time and particle size effective to provide a polycrystalline sintered cubic halide scintillator having a pulse height resolution of from about 7% to about 20%. The conditions include a temperature ranging from about ambient temperature up to about 90% of the melting point of the cubic halide, a pressure of from about 30,000 psi to about 200,000 psi, a pressing residence time of from about 5 minutes to about 120 minutes and an average cubic halide particle size of from about 60 micrometers to about 275 micrometers.

US Patent:

8247778, Aug 21, 2012

Filed:

Jun 30, 2010

Appl. No.:

12/826808

Inventors:

Kevin Paul McEvoy - Ballston Spa NY, US
James Wilson Rose - Guilderland NY, US
Andrea Jeanne Howard - Albany NY, US
Michael James Palleschi - Clifton Park NY, US
Jonathan David Short - Saratoga Springs NY, US

Assignee:

General Electric Company - Niskayuna NY

International Classification:

G01T 1/20
G01T 1/00

US Classification:

250367, 2504831, 2504861

Abstract:

A scintillator array and method for making the same are provided. The array comprises a bi-layer reflector further comprising a conformal smoothing layer and a mirror layer. The bi-layer reflector does not comprise an intervening reducing agent or adhesion layer and/or comprises aluminum. Further, the mirror layer may be deposited via gas phase metallization, allowing application to tightly confined spaces. A detector array comprising the scintillator array is also provided.

US Patent:

8479487, Jul 9, 2013

Filed:

Aug 10, 2009

Appl. No.:

12/538301

Inventors:

Anthony Yu-Chung Ku - Rexford NY, US
Kevin Paul McEvoy - Ballston Spa NY, US
Patrick Daniel Willson - Latham NY, US
Parag Parkash Kulkarni - Niskayhuna NY, US
Roger Allen Shisler - Ballston Spa NY, US
Anoop Muralidhara Kurup - Bangalore, IN

Assignee:

General Electric Company - Niskayuna NY

International Classification:

F02C 3/28
B01D 53/22

US Classification:

60 3912, 96 8, 96 11

Abstract:

A hybrid multichannel porous structure for processing between two fluid streams of different compositions includes a housing and one or more structures disposed within the cavity of the housing in a shell and tube configuration. Each structure includes a body made of a porous, inorganic material and a plurality of channels for processing an optional sweep stream. Each channel is coated with a membrane layer. A feed stream introduced into the housing is in direct contact with the structures such that a gas selectively permeates through the body and into the channels. The gas combines with the sweep stream to form a permeate that exits from each channel. The remaining feed stream forms a retentate that exits from the housing. The feed stream may consist of syngas containing hydrogen gas and the sweep stream may contain nitrogen gas. A power plant that incorporates the hybrid structure is disclosed.

US Patent:

8647997, Feb 11, 2014

Filed:

Nov 30, 2010

Appl. No.:

12/957151

Inventors:

Kevin Paul McEvoy - Ballston Spa NY, US
Hrishikesh Keshavan - Clifton Park NY, US
Anthony Yu-Chung Ku - Rexford NY, US
Steven Mitchell Kuznicki - Alberta, CA
Weizhu An - Alberta, CA
Lan Wu - Alberta, CA
Paul Donald Swenson - Alberta, CA

Assignee:

General Electric Company - Niskayuna NY

International Classification:

B01J 20/28
B01J 20/16
B01J 29/06

US Classification:

502 4, 502 60

Abstract:

A free-standing zeolite membrane and a zeolite membrane supported on a support structure are disclosed. The free-standing zeolite membrane is fabricated by mixing zeolite particles and an optional inorganic binder, forming a green body, and sintering the green body at a sufficiently low temperature so as to prevent damage to the gas selectivity properties of the zeolite particles. The supported composite zeolite membrane is fabricated by mixing a sacrificial binder, an optional inorganic binder, boehmite sol and zeolite particles to form a slurry. The slurry is then coated onto a porous support structure, dried and sintered at a sufficiently low temperature so as to prevent damage to the gas selective properties of the zeolite particles. In both membranes, the zeolite particles span the entire thickness of the membrane to provide a high selectivity path for the flow of gas to pass therethrough.

US Patent:

20060108533, May 25, 2006

Filed:

Nov 23, 2004

Appl. No.:

10/996261

Inventors:

Kevin McEvoy - Ballston Spa NY, US
James Vartuli - Rexford NY, US
Stephen Tedeschi - Schenectady NY, US
Steven Duclos - Clifton Park NY, US
Martin Lee - Niskayuna NY, US
Venkat Venkataramani - Clifton Park NY, US
James Brewer - Scotia NY, US
Robert Lyons - Burnt Hills NY, US
Mohandas Nayak - Bangalore, IN

International Classification:

G01T 1/24

US Classification:

250367000, 264001100

Abstract:

A method of manufacturing a detector array for an imaging system, the method comprising providing a pixelated scintillator having a plurality of lost molded pixels comprising a scintillator material adapted to detect radiation.

US Patent:

20060222762, Oct 5, 2006

Filed:

Mar 29, 2005

Appl. No.:

11/092303

Inventors:

Kevin McEvoy - Ballston Spa NY, US
James Vartuli - Rexford NY, US
Samhita Dasgupta - Niskayuna NY, US
Brian Lawrence - Clifton Park NY, US

International Classification:

B05D 5/06
B05D 3/02

US Classification:

427162000, 427372200

Abstract:

A method of forming a patterned optical transmission device on a substrate includes forming a liquid phase pattern on the substrate. The liquid phase pattern comprises a fluid precursor having a suspension or a solution of a dopant in a solvent. Catalyzing the liquid phase pattern to convert the liquid phase pattern into a hardened pattern, and processing the hardened pattern to form a patterned optical transmission device.