Hua Xiaohan P Chen

US Patent:

7401046, Jul 15, 2008

Filed:

Jul 25, 2001

Appl. No.:

09/912709

Inventors:

Michael Hollerman - Chicago IL, US
Joseph Hernandez - Tinley Park IL, US
J. Brad Peek - Round Lake IL, US
Rajesh Aery - Aurora IL, US
Hua Chen - Chicago IL, US
Susan DiMagno - Chicago IL, US

Assignee:

Chicago Board Options Exchange - Chicago IL

International Classification:

G06Q 40/00

US Classification:

705 37, 705 36 R

Abstract:

The present invention provides a method of displaying option market information including establishing a communication link between a member computer and a central computer, accessing option trading data from the central computer through the member computer, and inputting at least one signal to the member computer. The signal represents either an underlying asset symbol or an option class symbol of an underlying asset. The method further includes generating a display page listing option trading information for a plurality of option series relating to at least one of the entered underlying asset symbol and the entered option class symbol, and displaying the plurality of option series on the display page such that the option series having a strike price approximately equal to the current trading price of the underlying asset is centrally positioned on the display page. Additionally, a strike price and a first date indicator can be input and the display page can list trading information for the entered option and plurality of option series having at least a second expiration date, the plurality of option series extending over a range of strike prices, the range centrally positioned at the current trading price of the underlying stock, the plurality of option series relating to the at least one of the entered underlying asset symbol and the entered option symbol. A further method of the invention includes generating a display page listing option trading information for a month entered for an underlying asset.

US Patent:

20030023525, Jan 30, 2003

Filed:

Jun 13, 2001

Appl. No.:

09/880309

Inventors:

Hua Chen - Brooklyn NY, US

International Classification:

G06F017/60

US Classification:

705/035000

Abstract:

The present invention involves a method and an apparatus capable of calculating, in real time, option-embedded coupon bearing bonds by option adjusted spread and linear approximation. The linear approximation uses a first order partial derivative to calculate a vector of sensitivities of bond price against yield curve by which an nth order linear approximation of the bond price can be approximated. The apparatus comprises a plurality of trader's workstations, one of which may serve as an option adjusted spread lattice engine for full lattice computation. The trader's workstations may be actuated by a triggering object, which receives yield curve, bond price, spread, volatility and other bond information updates from a database server. For each security, the Lattice Engine uses the lattice method to compute the price of the security and a vector of partial derivatives of the security price with respect to the yield curve. While other workstations, upon receiving any update of the yield curve, use the results of the Lattice Engine to perform first order approximation of the security prices. Since linear approximation is a simple calculation, the price update of a large number of securities can be carried out in real time. Because the Lattice Engine recalculates the first order partial derivatives when the yield curve has changed significantly, the linear approximations are very accurate in general.

US Patent:

20080208722, Aug 28, 2008

Filed:

Feb 22, 2008

Appl. No.:

12/036062

Inventors:

Michael Hollerman - Chicago IL, US
Joseph Hernandez - Tinley Park IL, US
J. Brad Peek - Round Lake IL, US
Rajesh Aery - Aurora IL, US
Hua Chen - Chicago IL, US
Susan DiMagno - Chicago IL, US

International Classification:

G06Q 40/00

US Classification:

705 35

Abstract:

The present invention provides a method of displaying option market information including establishing a communication link between a member computer and a central computer, accessing option trading data from the central computer through the member computer, and inputting at least one signal to the member computer. The signal represents either an underlying asset symbol or an option class symbol of an underlying asset. The method further includes generating a display page listing option trading information for a plurality of option series relating to at least one of the entered underlying asset symbol and the entered option class symbol, and displaying the plurality of option series on the display page such that the option series having a strike price approximately equal to the current trading price of the underlying asset is centrally positioned on the display page. Additionally, a strike price and a first date indicator can be input and the display page can list trading information for the entered option and plurality of option series having at least a second expiration date, the plurality of option series extending over a range of strike prices, the range centrally positioned at the current trading price of the underlying stock, the plurality of option series relating to the at least one of the entered underlying asset symbol and the entered option symbol. A further method of the invention includes generating a display page listing option trading information for a month entered for an underlying asset. A still further method of the invention includes generating a display page listing option trading information for a strike price entered for an underlying asset.

US Patent:

20110048003, Mar 3, 2011

Filed:

Sep 3, 2009

Appl. No.:

12/553787

Inventors:

Hua Chen - Morristown NJ, US

International Classification:

F02B 33/44
F01D 1/02

US Classification:

606052, 415203

Abstract:

An exemplary compressor housing includes a compressor volute; concentric walls that define an annular passage and a compressor wheel shroud disposed about a central axis where a compressor wheel positioned with respect to the shroud has an intended direction of rotation about the central axis; positioned with respect to the central axis, from a lower axial position to a higher axial position, a gas inlet to the annular passage, one or more ports extending between the shroud and the annular passage and a nozzle; and a gas volute to provide, to the gas inlet to the annular passage, gas having swirl in a direction opposite the intended direction of rotation of the compressor wheel. Various other exemplary devices, systems, methods, etc., are also disclosed.

US Patent:

20130152795, Jun 20, 2013

Filed:

Dec 19, 2011

Appl. No.:

13/330448

Inventors:

Kirit M. Patel - Winfield IL, US
Bradley P. Russell - Wheaton IL, US
Paul Alvin Sechrist - South Barrington IL, US
Michael Jerome Vetter - Schaumburg IL, US
Hua Chen - Pleasant Prairie WI, US
Pengfei Chen - Des Plaines IL, US

Assignee:

UOP LLC - Des Plaines IL

International Classification:

B01D 53/02

US Classification:

96152

Abstract:

Adsorption vessels and systems utilizing adsorption vessels are provided herein. In one embodiment, an adsorption vessel for receiving a fluid mixture and for separating a component from therein includes a vessel wall extending from a bottom end to a top end and defining a vessel chamber. A bottom inlet is formed in the bottom end of the adsorption vessel for introducing the fluid mixture to the vessel chamber. Further, a support plate is positioned in the vessel chamber above the bottom end, and defines a bottom void volume between the support plate and the bottom end. A filler material having a total porosity of less than about 25% is positioned in the bottom void volume and defines a channel for flow of the fluid mixture from the bottom inlet to the support plate.

US Patent:

60468114, Apr 4, 2000

Filed:

Jan 11, 1996

Appl. No.:

8/583865

Inventors:

Lawrence B. Wolff - New York NY
Hua Chen - Baltimore MD

Assignee:

The Johns Hopkins University - Baltimore MD

International Classification:

G01J 400

US Classification:

356369

Abstract:

An apparatus for determining electrical conductivity of a surface of an object. The apparatus comprises a first polarizer for polarizing light incident upon the surface of the object. The apparatus also comprises a camera mechanism for receiving the polarized light reflected from the surface of the object and identifying the electrical conductivity of the surface of the object from phase retardance of polarization of the polarized light upon reflection from the surface of the object. The present invention pertains to a method for determining electrical conductivity of a surface of an object. The method comprises the steps of polarizing light. Next there is the step of reflecting the polarized light off the surface of the object. Then there is the step of receiving the reflected polarized light at a camera mechanism. Next there is the step of converting the received polarized light into a corresponding electrical signal with the camera mechanism.

US Patent:

20170215183, Jul 27, 2017

Filed:

Jan 5, 2017

Appl. No.:

15/399157

Inventors:

- San Diego CA, US
Sudhir Kumar BAGHEL - Bridgewater NJ, US
Shailesh PATIL - Raritan NJ, US
Hua CHEN - Berkeley Heights NJ, US

International Classification:

H04W 72/04
H04L 1/18

Abstract:

One problem with current D2D communications is that there is no physical layer feedback (e.g., HARQ feedback) for unicast sidelink communications. That is, the transmitting UE does not know if the receiving UE receives and/or properly decodes the unicast transmission. Instead, current D2D communications require that a transmitting UE send a unicast sidelink communication multiple times to increase the chances that the unicast sidelink communication is received by the receiving UE. By blindly transmitting unicast sidelink communications multiple times, the spectral efficiency and radio resource utilization of the network is decreased. The present disclosure provides a solution to this problem by enabling HARQ feedback for unicast sidelink communications that improves the spectral efficiency and also enables better radio resource utilization for the network.