Trung Thanh Nguyen

US Patent:

6503651, Jan 7, 2003

Filed:

Apr 19, 2000

Appl. No.:

09/552419

Inventors:

Trung Van Nguyen - Lawrence KS

Assignee:

TVN Systems, Inc. - Lawrence KS

International Classification:

H01M 200

US Classification:

429 34, 429 22, 429 39, 429 50

Abstract:

A fuel cell system made up of a plurality of fuel cells. Each cell includes a fuel inlet, an oxidant inlet, a fuel side product outlet and an oxidant side product outlet. A common fuel supply line is provided for the fuel inlets. A common oxidant supply line is provided for the oxidant inlets. A common product purging mechanism is coupled to the outlets for purging the same of unused fuel, unused oxidant, fuel side product and oxidant side product. The product purging mechanism includes valving structure operable to selectively and independently open the outlets of a given cell. A method for operating such a fuel cell system includes supplying fuel to the fuel inlets from a common source of fuel and supplying an oxidant to the oxidant inlets from a common source of oxidant. The outlets of a given cell are selectively opened to purge fuel product and oxidant product from the given cell while the outlets of other cells are kept closed.

US Patent:

6664920, Dec 16, 2003

Filed:

Nov 18, 1993

Appl. No.:

08/154051

Inventors:

Charles J. Mott - El Segundo CA
Trung T. Nguyen - Huntington Beach CA

Assignee:

Raytheon Company - Lexington MA

International Classification:

G01S 1338

US Classification:

342129, 342 70, 342196

Abstract:

A cancellation technique embodied in a system and a radar signal processing method that is employed to detect near-range targets. The present invention uses a frequency-modulation continuous-wave (FMCW) or stepped frequency waveform and is capable of detecting near-range targets that would normally be obscured by transmitter leakage and internal reflections. This cancellation technique works by transmitting one or more reference ramp signals and then subtracting the coherent average of the transmitted reference ramp signals from a group of succeeding transmitted and received ramp return -signals. The resulting group of FM ramp return signals is noncoherently integrated to achieve more stable target detection statistics. More particularly, the present technique implements the following processing steps. Generating a predetermined number of reference ramp signals.

US Patent:

6888490, May 3, 2005

Filed:

Jul 20, 2004

Appl. No.:

10/894792

Inventors:

Oleg Brovko - Los Angeles CA, US
Eric Wayne Day - Lomita CA, US
Trung T. Nguyen - Huntington Beach CA, US
Jing Zhao - Moreno Valley CA, US
Mark S. Klemens - Los Angeles CA, US

Assignee:

Raytheon Company - Waltham MA

International Classification:

G01S013/90

US Classification:

342 25A, 342 25 R, 342 25 F

Abstract:

A synthetic aperture radar (SAR) image of a wide coverage area is acquired during a frame containing a first plurality of ambiguities induced in the SAR image from radar scatterers within the area. The area is illuminated with radar pulses and a segmented receive antenna oriented towards the area. The segmented receive antenna has a second plurality of sub-apertures, where the second plurality of sub-apertures is larger than the first plurality of ambiguities. Each sub-aperture has its own receiver. The digital stream from each receiver is stored in a computer for the duration of the frame to obtain frame data. A SAR image is extracted from the frame data. The first plurality of ambiguities are identified from analysis of the frame data, and a correction is computed to account for the first plurality of ambiguities contained within the synthetic aperture image. The correction is applied to reduce distortions caused by the ambiguities in the SAR image.

US Patent:

6893766, May 17, 2005

Filed:

May 31, 2002

Appl. No.:

10/160543

Inventors:

Trung Van Nguyen - Lawrence KS, US

Assignee:

TVN Systems, Inc. - Lawrence KS

International Classification:

H01M002/00

US Classification:

429 34, 429 22, 429 39, 429 50

Abstract:

A fuel cell system made up of a plurality of fuel cells. Each cell includes a fuel inlet, an oxidant inlet, a fuel side product outlet and an oxidant side product outlet. A common fuel supply line is provided for the fuel inlets. A common oxidant supply line is provided for the oxidant inlets. A common product purging mechanism is coupled to the outlets for purging the same of unused fuel, unused oxidant, fuel side product and oxidant side product. The product purging mechanism includes valving structure operable to selectively and independently open the outlets of a given cell. A method for operating such a fuel cell system includes supplying fuel to the fuel inlets from a common source of fuel and supplying an oxidant to the oxidant inlets from a common source of oxidant. The outlets of a given cell are selectively opened to purge fuel product and oxidant product from the given cell while the outlets of other cells are kept closed.

US Patent:

D535166, Jan 16, 2007

Filed:

Apr 4, 2005

Appl. No.:

29/226900

Inventors:

Milo M. Kensrue - Dana Point CA, US
Trung Dinh Nguyen - Laguna Hills CA, US

Assignee:

M.K. Products, Inc. - Irvine CA

International Classification:

0805

US Classification:

D 8 30

US Patent:

7244909, Jul 17, 2007

Filed:

Apr 4, 2005

Appl. No.:

11/098773

Inventors:

Milo M. Kensrue - Dana Point CA, US
Trung Dinh Nguyen - Laguna Hills CA, US

Assignee:

M.K. Products, Inc. - Irvine CA

International Classification:

B23K 9/00
B23K 9/12

US Classification:

21913731, 2191377

Abstract:

Several aspects of an in-line welding gun are disclosed. In one aspect, the welding gun has a variable profile insulating boot disposed over the torch barrel of the gun. The variable profile insulating boot may include a molded material having varying thickness to provide the desired insulating properties. In another aspect of the welding gun, a speed control mechanism for the motor driving the wire feed assembly is positioned in a recess in the housing such that it reduces the risk of being unintentionally adjusted during operation of the welding gun. In another aspect of the welding gun, the wire feed mechanism features a feeder roller and an idler roller that may be separated without opening the housing of the welding gun. To separate the rollers, the user may depress a portion on the exterior of the housing to press on a pivotable lever on which the idler roller is disposed.

US Patent:

8026019, Sep 27, 2011

Filed:

Jan 18, 2007

Appl. No.:

11/654754

Inventors:

Trung Van Nguyen - Lawrence KS, US

Assignee:

NK Technologies, LLC - Lawrence KS

International Classification:

H01M 2/08
H01M 2/14
H01M 4/64
H01M 4/66
H01M 8/00

US Classification:

429510, 429511, 429519, 429520, 429535

Abstract:

A proton exchange membrane fuel cell comprises a membrane formed from a fluorocarbon ionic polymer material capable of being bonded to an acrylic, preferably a polymethylmethacrylate polymer, and at least one desirably electrically conductive plate bonded to an area of a face of the membrane via an acrylic plastic material. The bond may be accomplished by positioning a layer of the acrylic plastic material between a surface of the plate and an area of a face of the membrane. Alternatively, the plate may be constructed of the acrylic plastic material and a surface thereof may be bonded directly to an area of a face of the membrane.

US Patent:

56315406, May 20, 1997

Filed:

Nov 23, 1994

Appl. No.:

8/344762

Inventors:

Trung V. Nguyen - Lawrence KS

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

H01M 1044

US Classification:

320 30

Abstract:

A highly accurate apparatus and method of predicting remaining capacity Q and reserve time t of a discharging battery to a selected end voltage is determined by an arrangement considering the open circuit voltage, battery voltage, battery temperature and its internal resistance. The remaining battery capacity Q is determined from the difference between the battery full charge open circuit voltage Eoc and the voltage loss due to the internal resistance of the battery IRint and the battery voltage on discharge divided by the battery temperature T, which is the temperature-corrected battery overvoltage.