Hoang V Nguyen

US Patent:

6334229, Jan 1, 2002

Filed:

Jan 7, 1999

Appl. No.:

09/227272

Inventors:

Mansour Moinpour - Cupertino CA
Hoang T. Nguyen - San Jose CA
Mohsen Salek - Cupertino CA
Young C. Park - Mountain View CA
Tom Bramblett - Hillsboro OR
John M. deLarios - Palo Alto CA
Lynn S. Ryle - San Jose CA
Donald E. Anderson - Morgan Hill CA
Wilbur C. Krusell - San Jose CA

Assignee:

Lam Research Corporation - Fremont CA

International Classification:

B01B 1102

US Classification:

15 77, 15 883, 15102, 451 44, 451245

Abstract:

An apparatus for cleaning edges of substrates is described. The present invention provides a cleaning mechanism that cleans particles off the edge of the wafer based on friction and/or a difference in tangential velocity at a point of contact between the wafer and the cleaning mechanism.

US Patent:

7119325, Oct 10, 2006

Filed:

Jan 27, 2004

Appl. No.:

10/766306

Inventors:

Jan-Willem Pieterse - San Jose CA, US
Hoang Nguyen - Livermore CA, US
Rosemary O. Abriam - Livermore CA, US
Andrew H. Cordes - San Jose CA, US

Assignee:

Bookham Technology PLC

International Classification:

G02B 6/00

US Classification:

25022714, 356 731, 356477, 385 12

Abstract:

An apparatus and method for determining a physical parameter affecting an optical sensor or a number of sensors in a network. The apparatus uses a narrow linewidth source at an emission wavelength λand an arrangement for varying the emission wavelength λof the radiation. An analysis module with curve fitting is used to generate a fit to the response signal obtained from the optical sensor. The physical parameter is determined form the fit rather than from the response signal. The apparatus can be employed with Bragg gratings, etalons, Fabry Perot elements or other optical sensors.

US Patent:

7230960, Jun 12, 2007

Filed:

Mar 24, 2004

Appl. No.:

10/808732

Inventors:

Hoang Nguyen - Livermore CA, US
Dong Ho Choi - Palo Alto CA, US
Ross D. Pace - San Jose CA, US
Thang Tran - San Jose CA, US
Weizhi Wang - San Jose CA, US
Alan Lim - San Jose CA, US

Assignee:

Bookham Technology PLC - Abingdon

International Classification:

H01S 3/121
H01S 3/10
H01S 3/13
H01S 3/08

US Classification:

372 20, 372 14, 372 29022, 372102

Abstract:

Tunable external cavity lasers are used in applications such as interferometry, FM spectroscopy, and optical communications equipment testing. Mode hop free high bandwidth frequency modulation operation is desired in a tunable external cavity laser. This application describes new and novel techniques for controlling the output wavelength of a tunable external cavity laser while suppressing mode hop.

US Patent:

7286577, Oct 23, 2007

Filed:

Oct 28, 2004

Appl. No.:

10/976114

Inventors:

Hoang Tan Nguyen - Livermore CA, US
Weizhi Wang - San Jose CA, US

Assignee:

Bookham Technology PLC - Abington

International Classification:

H01S 3/115
H01S 3/10

US Classification:

372 12, 372 20

Abstract:

A laser-emitting device may be coupled to an electro-optically controlled wavelength actuator. An electro-optically controlled wavelength actuator may be a holographic wavelength actuator or a liquid crystal wavelength actuator. The electro-optically controlled wavelength actuator may function as a tunable diffraction grating for external cavity lasers.

US Patent:

7443909, Oct 28, 2008

Filed:

Dec 21, 2004

Appl. No.:

11/020055

Inventors:

Hoang Nguyen - Davis CA, US
Jianzhong Zhang - Irving TX, US
Yuanbin Guo - Richardson TX, US
Dennis McCain - Lewisville TX, US
Joe Dowling - Aughnacliffe, IE

Assignee:

Nokia Corporation - Espoo

International Classification:

H04B 1/707

US Classification:

375150, 375316, 375147, 375229, 375232, 375233, 375234, 375235, 375236, 375343

Abstract:

Receiving downlink CDMA signals in a fast-fading environment is facilitated at higher receiver velocities by updating the block-adaptive linear minimum mean square error (LMMSE) downlink CDMA equalizer. The autocorrelation matrix of the observed data is updated by passing block-wise autocorrelation slides through a filter. Each autocorrelation slide is an autocorrelation matrix estimated from a short block of observed data over which the channel can be considered constant. This method achieves a reliable estimate for the autocorrelation matrix when the block size must be small to ensure that the block-wise stationarity assumption holds in cases of fast fading channels. In addition, small block sizes make it possible to satisfy the equalizer delay constraint imposed by hardware and certain voice transmission standards such as CDMA2000 1X where demodulated data must be delivered within only several symbol periods of the signal arrival time.

US Patent:

7451575, Nov 18, 2008

Filed:

Nov 10, 2004

Appl. No.:

10/985342

Inventors:

Georgi Hall - Pittsburg CA, US
Hoang Nguyen - Tracy CA, US
Herb Kamphausen - Willits CA, US

Assignee:

California Expanded Metal Products Company - City of Industry CA

International Classification:

E04B 1/00

US Classification:

52289, 52696, 527201, 52633, 52236, 526561, 52262, 522366, 522369, 52702, 52241, 403397, 403329, 403245, 4032321, 403262, 248201, 2482001, 248300, 2482193

Abstract:

A floor system includes a pair of joist rim assemblies each having a web defining a first surface. The web also includes a mounting portion defining a second surface offset from the first surface. The joist rim may also include a prong defining a slot along with the web. A joist connector bracket is received within the slot and is connectable to the mounting portion of the web. A joist extends between the pair of joist rim assemblies and is connected to the joist connector bracket of each joist rim assembly.

US Patent:

7586982, Sep 8, 2009

Filed:

May 6, 2003

Appl. No.:

10/431179

Inventors:

Hoang Nguyen - Davis CA, US
Jianzhong Zhang - Irving TX, US
Balaji Raghothaman - Allen TX, US

Assignee:

Nokia Corporation - Espoo

International Classification:

H03H 7/30

US Classification:

375233, 375316, 708323, 370342

Abstract:

Disclosed is a minimum mean square error (MMSE) equalizer and method for single-user detection of a signal received from a downlink code-division multiple access CDMA channel. The equalizer includes a Kalman filter having an input coupled to the received signal for generating a best linear unbiased estimate of a transmitted chip sequence for a single user. A reduced computational complexity Kalman filter embodiment is also disclosed that only periodically updates a Kalman filter prediction error covariance matrix P(k|k−1), a Kalman filter filtering error covariance matrix P(k|k) and the Kalman gain K(k).

US Patent:

7975446, Jul 12, 2011

Filed:

Nov 11, 2008

Appl. No.:

12/268954

Inventors:

Georgi Hall - Pittsburg CA, US
Hoang Nguyen - Tracy CA, US
Herb Kamphausen - Willits CA, US

Assignee:

California Expanded Metal Products Company - City of Industry CA

International Classification:

E04B 1/00

US Classification:

52289, 52696, 522367

Abstract:

A floor system includes a pair of joist rim assemblies each having a web defining a first surface. The web also includes a mounting portion defining a second surface offset from the first surface. The joist rim may also include a prong defining a slot along with the web. A joist connector bracket is received within the slot and is connectable to the mounting portion of the web. A joist extends between the pair of joist rim assemblies and is connected to the joist connector bracket of each joist rim assembly.