John Chyan Liu

US Patent:

6423980, Jul 23, 2002

Filed:

Jun 26, 2000

Appl. No.:

09/575678

Inventors:

Daniel W. Wilson - Glendale CA
John K. Liu - Pasadena CA
Sumith V. Bandara - Valencia CA
Sarath D. Gunapala - Valencia CA

Assignee:

California Institute of Technology - Pasadena CA

International Classification:

H01L 2906

US Classification:

257 21, 257436, 257460, 438 32

Abstract:

Techniques for coupling radiation into a quantum-well detector by using a two-dimensional array of grating cells to form at least three different grating directions to provide efficient coupling.

US Patent:

6458732, Oct 1, 2002

Filed:

Jun 7, 1999

Appl. No.:

09/326722

Inventors:

Douglas K. Doza - Hilliard OH
John Y. Liu - Upper Arlington OH

Assignee:

Allied Mineral Products, Inc. - Columbus OH

International Classification:

C04B 3500

US Classification:

501 94, 501 964, 501 961, 501 971, 501 972, 501 973, 501 984, 501 92, 501 985, 501102, 501106, 501107, 501108, 501109, 501119, 501120, 501122, 501118, 501123, 501124, 501125, 501127, 501128, 501129, 501130, 501126, 501 963, 501 981, 501111, 501 87, 501 88, 501 89, 264 30, 264 31

Abstract:

A dry refractory composition having superior insulating value. The dry refractory composition also may have excellent resistance to molten metals and slags. The composition includes filler lightweight material, which may be selected from perlite, vermiculite, expanded shale, expanded fireclay, expanded alumina silica hollow spheres, bubble alumina, sintered porous alumina, alumina spinel insulating aggregate, calcium alumina insulating aggregate, expanded mulllite, cordierite, and anorthite, and matrix material, which may be selected from calcined alumina, fused alumina, sintered magnesia, fused magnesia, silica fume, fused silica, silicon carbide, boron carbide, titanium diboride, zirconium boride, boron nitride, aluminum nitride, silicon nitride, Sialon, titanium oxide, barium sulfate, zircon, a sillimanite group mineral, pyrophyllite, fireclay, carbon, and calcium fluoride. The composition also may include dense refractory aggregate, which may be selected from calcined fireclay, calcined Chamotte, a sillimanite group mineral, calcined bauxite, pyrophyllite, silica, zircon, baddeleyite, cordierite, silicon carbide, sintered alumina, fused alumina, fused silica, sintered mullite, fused mullite, fused zirconia, sintered zirconia mullite, fused zirconia mullite, sintered magnesia, fused magnesia, sintered spinel, and fused spinel refractory grog, a heat activated bonding agent, and a dust suppressant.

US Patent:

7450251, Nov 11, 2008

Filed:

Nov 9, 2005

Appl. No.:

11/270000

Inventors:

Ketao Liu - Cerritos CA, US
Peter J. Sedivec - Manhattan Beach CA, US
Douglas Bender - Redondo Beach CA, US
Gregory S. Becker - Redondo Beach CA, US
John Y. Liu - San Marino CA, US
Richard W. Guthrie - Moorpark CA, US
Mark A. Lundgren - Fullerton CA, US

Assignee:

The Boeing Company - Chicago IL

International Classification:

G01C 1/03
G01B 11/26

US Classification:

356625, 356 309, 356614, 356620, 3561411

Abstract:

Systems and techniques for laser metrology. A system may include a laser source and a fanning apparatus configured to generate a fanned laser beam. The fanned laser beam may be scanned across the surface of an object, and may reflect off a plurality of targets positioned on the surface. A position detection module may determine a position of the metrology targets based on the reflected beam.

US Patent:

7647837, Jan 19, 2010

Filed:

Aug 29, 2007

Appl. No.:

11/897158

Inventors:

Michael E. Moran - Marysville OH, US
Sean D. Gregory - Columbus OH, US
Jason R. Robinson - Columbus OH, US
John Liu - Columbus OH, US

Assignee:

Honeywell International Inc. - Morristown NJ

International Classification:

G01L 1/00

US Classification:

73766

Abstract:

An active temperature differential compensation for strain gage based sensors. An array of temperature sensors can be placed at the gage locations to measure the difference in temperature that induces strain on the strain gages. The output of the temperature sensor network can be placed in series with the strain gage network to directly compensate the induced voltage caused by the temperature gradient and/or employed as the input of a mathematical algorithm that can compensate the output from the strain gage bridge to dynamically correct unwanted thermally induced strain in the strain gages.

US Patent:

D616543, May 25, 2010

Filed:

Aug 29, 2008

Appl. No.:

29/323761

Inventors:

Greg Bak-Boychuk - Laguna Niguel CA, US
Mark Wright - Carlsbad CA, US
John Liu - Corona CA, US
Carlyn Solomon - San Clemente CA, US

Assignee:

Edwards Lifesciences Corporation - Irvine CA

International Classification:

2402

US Classification:

D24129

US Patent:

7787134, Aug 31, 2010

Filed:

Apr 19, 2006

Appl. No.:

11/407549

Inventors:

Kirk Kohnen - Fullerton CA, US
Peter J. Sedivec - Manhattan Beach CA, US
Douglas Bender - Redondo Beach CA, US
Gregory S. Becker - Redondo Beach CA, US
John Y. Liu - San Marino CA, US
Richard W. Guthrie - Moorpark CA, US
Ketao Liu - Cerritos CA, US
Ray McVey - El Segundo CA, US
Mark A. Lundgren - Fullerton CA, US

Assignee:

The Boeing Company - Chicago IL

International Classification:

G01C 15/00

US Classification:

356620, 356 31, 356 311, 356622

Abstract:

Systems and techniques for laser metrology. Two or more fanned probe beams are scanned relative to a surface including one or more targets. A position detection module receives return beam information from the fanned probe beams, and determines a position of at least a first target of the one or more targets based on the return beam information.

US Patent:

8424560, Apr 23, 2013

Filed:

Dec 11, 2009

Appl. No.:

12/636086

Inventors:

Emil P. Kartalov - Pasadena CA, US
John Liu - Gilbert AZ, US
Axel Scherer - Laguna Beach CA, US
Clive Taylor - Malibu CA, US

Assignee:

University of Southern California - Los Angeles CA
California Institute of Technology - Pasadena CA

International Classification:

F16K 31/365
F16K 31/36
F15C 3/04
F15C 1/06

US Classification:

13750512, 13750513, 137829, 137833

Abstract:

Multi-valve autoregulatory microfluidic devices and methods are described. The described devices and methods offer improved performance and new means of tuning autoregulatory effects in microfluidic devices.

US Patent:

20130103343, Apr 25, 2013

Filed:

Oct 25, 2011

Appl. No.:

13/280344

Inventors:

John Y. Liu - San Marino CA, US

International Classification:

G06F 15/00

US Classification:

702141, 702150

Abstract:

A system and methods for calculating an attitude and a position of an object in space are disclosed. Measurements in relation to an object, stars, and a signal timing are received at a combined orbit and attitude determination system to provide received measurements. An estimated separation angle error, an estimated position error, and an estimated attitude error are estimated based upon the received measurements to provide estimated errors.