Cheng Yuen Liu

US Patent:

6591673, Jul 15, 2003

Filed:

Nov 28, 2001

Appl. No.:

09/980128

Inventors:

Cheng Bing Liu - Houston TX

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

G01V 338

US Classification:

7315218, 7315242, 7315255, 1662525, 1662542, 324346, 324366

Abstract:

A method of identifying the fluid type of subterranean formations according to the correlation between the variation trend of electrical resistivity with depth downhole in a borehole and the variation trend of porosity with depth downhole in the same borehole. The method includes the steps of: a) determining the rate of change with depth of a resistivity parameter (such as deep resistivity) of the formation surrounding the borehole; b) determining the rate of change with depth of a porosity parameter (such as total porosity and/or free fluid porosity measured by a nuclear magnetic resonance technique) of the formation surrounding the borehole; c) determining a comparison of the rate of change with depth of such resistivity parameter and the rate of change with depth of such porosity parameter for a given depth in the borehole; and d) using the comparison to determine the nature of the fluid in the formation surrounding the borehole at that depth downhole or in a given depth window downhole.

US Patent:

6832159, Dec 14, 2004

Filed:

Apr 23, 2003

Appl. No.:

10/249612

Inventors:

Jan W. Smits - Sugar Land TX
Peter T. Wu - Sugar Land TX
Qiming Li - Sugar Land TX
Cheng Bing Liu - Houston TX

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

G01V 1100

US Classification:

702 11

Abstract:

A method for identifying environmental effects in well log data includes selecting a plurality of models, each of the plurality of models including at least one parameter to be optimized; fitting the models to the well log data by optimizing the at least one parameter, the fitting producing a plurality of optimized models; determining an indicator of goodness of fit for each of the plurality of optimized models; and selecting a model representing a best fit of the well log data based on the indicator.

US Patent:

6950748, Sep 27, 2005

Filed:

Jul 25, 2003

Appl. No.:

10/604492

Inventors:

Cheng Bing Liu - Houston TX, US
Qiming Li - Sugar Land TX, US
Frank P. Shray - Sugar Land TX, US
Jacques Tabanou - Houston TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

G01V003/38

US Classification:

702 7, 324339

Abstract:

Techniques for determining a formation property by simplifying various two-geological-layer or multi-geological-layer models into a multi-electrical-layer model. A volume fraction of a layer in a multi-electrical-layer model is determined for an anisotropic region (sliding window) of the formation. The multi-electrical-layer electrical model includes a relative-lower-resistivity layer and a relative-higher-resistivity layer. A high-resolution resistivity measurement is used in the determination and resistivities for the relative-lower-resistivity layer and for the relative-higher-resistivity layer based on the volume fraction and bulk resistivity measure ments of the anisotropic region are determined. The formation property is based on the volume fraction, the resistivity of the relative-lower-resistivity layer, the resistivity of the relative-higher-resistivity layer, a total porosity of the anisotropic region, and bulk resistivity measurements of the region.

US Patent:

7239488, Jul 3, 2007

Filed:

Mar 9, 2004

Appl. No.:

10/797653

Inventors:

Li-Yan Zhu - San Jose CA, US
Kazumasa Yasuda - Sunnyvale CA, US
Cheng Yih Liu - San Jose CA, US
Winston Jose - San Jose CA, US

Assignee:

SAE Magnetics (H.K.), Ltd. - Shatin, N.T.

International Classification:

G11B 5/127
G11B 21/21
G11B 5/39

US Classification:

360323, 3602353, 2960314

Abstract:

According to an embodiment of the present invention, a slider design is presented that provides improved protection for the head/sensor of the slider. In one embodiment, the design of the slider is such that ESD protection is provided during the slider wafer process, the “back-end” processes (e. g. , when the completed slider/head is incorporated into an HGA), and during operation in a disk drive or the like. In this embodiment, a conductive film is provided that surrounds the insulating-material slider substrate. The conductive film provides a grounding path during the wafer fabrication processes. This conductive layer may be further patterned during head fabrication to provide a ground path for back-end fabrication processes. A conductive stripe may be added for discharging debris in the slider-to-disk interface.

US Patent:

8295882, Oct 23, 2012

Filed:

Oct 18, 2010

Appl. No.:

12/906277

Inventors:

James Fan - San Ramon CA, US
Richard Kuo - Mountain View CA, US
Cheng P. Liu - Duluth GA, US

Assignee:

AT&T Intellectual Property I, LP - Atlanta GA

International Classification:

H04B 1/38

US Classification:

455558, 455415, 455418, 4554351

Abstract:

Systems, methods, and computer program products are for managing access to a femtocell coverage area. An exemplary method includes storing in a memory component a first identifier corresponding to a subscribed service of a communication device and a second identifier corresponding to a user of the communication device, and granting access to the femtocell coverage area using the second identifier.

US Patent:

8526913, Sep 3, 2013

Filed:

Oct 8, 2012

Appl. No.:

13/647019

Inventors:

Richard Kuo - Mountain View CA, US
Cheng P Liu - Duluth GA, US

Assignee:

AT&T Intellectual Property I, L.P. - Atlanta GA

International Classification:

H04M 1/66

US Classification:

455410, 455411, 4554351

Abstract:

Systems, methods, and computer program products are for managing access to a femtocell coverage area. An exemplary method includes storing in a memory component a first identifier corresponding to a subscribed service of a communication device and a second identifier corresponding to a user of the communication device, and granting access to the femtocell coverage area using the second identifier.

US Patent:

20090155821, Jun 18, 2009

Filed:

Jan 4, 2007

Appl. No.:

12/159827

Inventors:

John Kunich - San Leandro CA, US
Cheng Liu - Richmond CA, US

International Classification:

G01N 33/574
G01N 33/566

US Classification:

435 723, 435 72

Abstract:

Methods for detecting antibody dependent cellular cytotoxicity (ADCC) are described herein. The methods are label-free, and can be performed in real time on adherent cells. The methods can include, for example, (a) monitoring the impedance between electrodes on a non-conducting substrate that supports the growth of target cells in an assay medium; and (b) adding effector cells and an antibody that binds to the target cells to the assay medium; wherein any decrease in the impedance between the electrodes on the substrate following addition of the effector cells and the antibody is indicative of ADCC function having been effected in the assay medium.

US Patent:

20090246208, Oct 1, 2009

Filed:

Jan 4, 2007

Appl. No.:

12/159665

Inventors:

Michael Kavanaugh - Orinda CA, US
Cheng Liu - Richmond CA, US

Assignee:

Novartis AG - Basel
Xoma Technology Ltd. - Hamilton

International Classification:

A61K 39/395
A61P 19/00

US Classification:

4241581

Abstract:

Methods for preventing and treating osteolysis, cancer metastasis and bone loss associated with cancer metastasis by administering an M-CSF-antagonist in combination with a therapeutic agent to a subject are provided.