Trung Don Nguyen

Address:

8200 Broadway St APT 303N, Houston, TX 77061

VIN:

JN8AS5MT0BW188782

Make:

NISSAN

Model:

ROGUE

Year:

2011

Address:

15707 Banty Fls Ct, Houston, TX 77068

VIN:

4T1BK3EK5AU112457

Make:

TOYOTA

Model:

CAMRY

Year:

2010

Address:

8203 Bellaire Blvd, Houston, TX 77036

VIN:

WDDNG71X97A063419

Make:

MERCEDES-BENZ

Model:

S-CLASS

Year:

2007

Address:

12715 Laleu Ln, Houston, TX 77071

VIN:

JH4CL969X7C018611

Make:

ACURA

Model:

TSX

Year:

2007

Address:

1405 E 35 St, Charlotte, NC 28205

VIN:

1HGFA16567L097246

Make:

HONDA

Model:

CIVIC

Year:

2007

Address:

4926 Conward Dr, Houston, TX 77066

Phone:

(281)3976832

VIN:

2T2GK31U47C026141

Make:

LEXUS

Model:

RX 350

Year:

2007

US Patent:

6522190, Feb 18, 2003

Filed:

Oct 31, 2001

Appl. No.:

09/999103

Inventors:

Randhir Singh Malik - Cary NC
Trung Minh Nguyen - Durham NC
William Hemena - Raleigh NC

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H03K 1762

US Classification:

327408, 327 63, 307 64

Abstract:

The present invention provides a highly efficient power supply with redundant multiple input voltage sources. The power supply uses switching transistors, specifically MOSFETs, to create paths for current from one of the voltage sources to the load. The switching transistors are switched either âonâ or âoffâ by comparators which compare the output from the voltage sources. These comparators allow the highest voltage source to provide power to the load, and keep the other switching transistors âoffâ that connect the common load to other voltage sources. Because the switching transistors have lower conduction losses than diodes in conventional power supplies, the power supply in accordance with the present invention is more efficient.

US Patent:

7249971, Jul 31, 2007

Filed:

Feb 28, 2005

Appl. No.:

11/068140

Inventors:

Charles P. Burke - Humble TX, US
Ronald E. Taylor - Spring TX, US
Steven D. Fraley - Houston TX, US
James N. Spence - Montgomery TX, US
Martin L. Tomek - Humble TX, US
Trung Dinh Nguyen - Houston TX, US

Assignee:

Greene, Tweed of Delaware, Inc. - Wilmington DE

International Classification:

H01R 13/40

US Classification:

439589, 439736

Abstract:

A hermetic pressure connector which provides a pressure-tight, electrically conductive connection through a hole in a bulkhead. The connector includes a transverse support member having a high pressure side and an opposite low pressure side. A passage extends through the transverse support member between the opposite sides. A conductor pin having an axial portion extends through the passage. An insulating sleeve surrounds at least the axial portion of the conductor pin, thereby electrically insulating the transverse support member from the conductor pin. A molded connected body surrounds at least a central portion of the conductor pin at least at one of the high and low pressure sides to thereby mechanically support the conductor pin in the passage. The molded connector body is directly sealingly engaged with the conductor pin, the insulating sleeve and the transverse support member.

US Patent:

7442081, Oct 28, 2008

Filed:

Jun 19, 2007

Appl. No.:

11/820402

Inventors:

Charles P. Burke - Humble TX, US
Ronald E. Taylor - Spring TX, US
Steven D. Fraley - Houston TX, US
James N. Spence - Montgomery TX, US
Martin L. Tomek - Humble TX, US
Trung Dinh Nguyen - Houston TX, US

Assignee:

Greene, Tweed of Delaware, Inc. - Wilmington DE

International Classification:

H01R 13/40

US Classification:

439589, 439935

Abstract:

A hermetic pressure connector which provides a pressure-tight, electrically conductive connection through a hole in a bulkhead. The connector includes a transverse support member having a high pressure side and an opposite low pressure side. A passage extends through the transverse support member between the opposite sides. A conductor pin having an axial portion extends through the passage. An insulating sleeve surrounds at least the axial portion of the conductor pin, thereby electrically insulating the transverse support member from the conductor pin. A molded connected body surrounds at least a central portion of the conductor pin at least at one of the high and low pressure sides to thereby mechanically support the conductor pin in the passage. The molded connector body is directly sealingly engaged with the conductor pin, the insulating sleeve and the transverse support member. The insulating sleeve may be formed as a two-piece insert that includes a ceramic piece on the high pressure side and a piece formed of polymeric material on the low pressure side.

US Patent:

7500793, Mar 10, 2009

Filed:

May 30, 2006

Appl. No.:

11/443871

Inventors:

Pragna Subhash Patel - Wyomissing PA, US
Trung D. Nguyen - Houston TX, US
Charles Pence Burke - Humble TX, US

Assignee:

Greene, Tweed of Delaware, Inc. - Wilmington DE

International Classification:

G02B 6/36

US Classification:

385 94, 385128, 385138

Abstract:

A glass-to-meal seal for use in high temperature and high pressure environments is described. The glass-to-metal seals includes an optical fiber having a metallized portion, the metallized portion having an outer dimension; an object having a high strength, corrosion-resistant alloy, the object having an outer surface and an inner surface defining a bore, the bore having a dimension larger than the outer dimension of the metallized portion of the optical fiber; and a hardened solder material disposed between the metallized portion of the optical fiber and the inner surface of the bore, such that a hermetic seal is provided between the metallized portion of the optical fiber and the inner surface of the bore; wherein the solder includes a substance having a melting temperature greater than about 250 C.

US Patent:

7679217, Mar 16, 2010

Filed:

Dec 28, 2007

Appl. No.:

11/966432

Inventors:

Cecil C. Dishman - Raleigh NC, US
Eino A. Lindfors - Raleigh NC, US
Randhir S. Malik - Cary NC, US
Trung M. Nguyen - Morrisville NC, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H02J 9/00

US Classification:

307 64, 307 87

Abstract:

An apparatus, system, and method are disclosed for a high efficiency redundant power system. First and second power supplies are connected in parallel to power a load. Each power supply includes a primary stage and a regulator stage. Each primary stage regulates voltage on an internal bus that is input for each regulator stage. Each regulator stage regulates a regulated bus connected to the load. A power meter detects power provided to the load and determines if the provided power is below a predefined power threshold. A regulator control module shuts down the regulator stage of the first power supply after the provided power falls below the predefined power threshold so the second power supply powers the load and the primary stage of the first power supply remains operational. A recovery module starts up the regulator stage of the first power supply after failure of the second power supply.

US Patent:

7698585, Apr 13, 2010

Filed:

Jul 10, 2008

Appl. No.:

12/170983

Inventors:

Randhir S. Malik - Cary NC, US
Trung M. Nguyen - Durham NC, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 1/32

US Classification:

713320, 713300, 323246

Abstract:

An apparatus, system, and method is provided for reducing idle power in a power supply. The apparatus includes a connection module to determine whether a load is connected to the output terminal of the power supply. Also included is an idle module that turns off the power supply for an idle interval when the connection module determines that a load is not connected to the output. A monitor module turns on the power supply for a monitor interval when the idle interval ends. During the monitor interval, the connection module determines whether the load has been connected to the output terminal of the power supply. An activation module turns on the power supply if the connection module determines, during the monitor interval, that the load has been connected to the power supply. If the load has not been connected, another idle interval is initiated.

US Patent:

7724487, May 25, 2010

Filed:

Jul 10, 2008

Appl. No.:

12/171086

Inventors:

Cecil C. Dishman - Raleigh NC, US
Randhir S. Malik - Cary NC, US
Trung M. Nguyen - Durham NC, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H02H 3/00
H02H 3/08
H02H 9/02
H02H 9/08

US Classification:

361 82, 361 84, 361 931, 361 939

Abstract:

An apparatus, system, and method are disclosed for preventing reverse current in a switching power supply. An electrical connector receives an input current from an electric source. An input current limiting module substantially prevents the input current from reaching a switching power supply when the input current is flowing in a reverse direction. A voltage reduction module reduces an input voltage of the switching power supply to a switching voltage when the input current is flowing in a forward direction. A switching module closes a switch in response to the voltage reduction module providing the switching voltage. The switch provides the input current a lower impedance path to the switching power supply than does the input current limiting module.

US Patent:

7908505, Mar 15, 2011

Filed:

Sep 28, 2007

Appl. No.:

11/864613

Inventors:

Randhir S. Malik - Cary NC, US
Cecil C. Dishman - Raleigh NC, US
Ted A. Howard - Cary NC, US
Eino A. Lindfors - Raleigh NC, US
Trung M. Nguyen - Morrisville NC, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 1/30

US Classification:

713340, 713300, 713330, 714 47, 714 48

Abstract:

An apparatus, system, and method are disclosed for event, time, and failure state recording in a power supply. Disclosed is a power supply that receives AC voltage as an input and provides regulated DC voltage as an output; a microcontroller integrated into the power supply that regulates output voltage and monitors, records, and reports operating conditions of the power supply; and a non-volatile solid-state storage that can be repeatedly read from, written to, and erased by the microcontroller and integrated within the microcontroller such that only a single address is needed to access both the microcontroller and the solid-state storage, the solid-state storage configured to store operating data received from the microcontroller, the operating data including the recorded operating conditions of the power supply.