Hao Chen

US Patent:

6570415, May 27, 2003

Filed:

May 30, 2002

Appl. No.:

10/158659

Inventors:

Hao Chen - Dallas TX
Rolf Lagerquist - Richardson TX
Hugh Mair - Fairview TX

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

H03B 100

US Classification:

327108, 327563, 327 65, 327206, 326 83

Abstract:

A predriver for a differential pair having a reduce voltage swing is disclosed having fast switching speed and low power consumption. The predriver includes a p-type MOS transistor, and a first and second n-type MOS transistor. The source of the p-type MOS couples to the first power supply rail. The gate of the first n-type MOS transistor couples to the gate of the p-type MOS transistor to form an input. The drain of the first n-type MOS transistor couples to the drain of the p-type MOS transistor to form an output. The drain of the second n-type MOS transistor couples to the source of the first n-type MOS transistor. The source of the second n-type MOS transistor couples to ground. The gate of the second n-type MOS transistor couples to the output. The presence of the second n-type MOS transistor alters the voltage swing of the predriver to be from the threshold voltage level to the full power supply voltage, substantially reducing the current or power consumption.

US Patent:

8073716, Dec 6, 2011

Filed:

Jul 3, 2008

Appl. No.:

12/167589

Inventors:

Julian E. Pelenur - Marblehead MA, US
Paul Thomas Cummings - Westford MA, US
Joseph Pilkerton - Charlestown MA, US
John Belizaire - New York NY, US
Kelly Ann Lynch - Glastonbury CT, US
Jeffrey Jerome Glass - Arlington MA, US
Hao Chen - West Hartford CT, US
Thomas Albert Muldoon - Newburyport MA, US

Assignee:

FirstBest Systems, Inc. - Lexington MA

International Classification:

G06Q 40/00

US Classification:

705 4, 705 7

Abstract:

Disclosed are methods of underwriting insurance contracts. In one embodiment a method comprises receiving from a registered user a request for approval of the insurance contract, the request for approval of the insurance contract including underwriting parameters of the insurance contract; reading, from a user database underwriting criteria corresponding to the user; determining whether the underwriting parameters of the insurance contract satisfy the underwriting criteria of the user; and providing an interface including a status message indicating that at least one underwriting criterion is not satisfied, if at least one underwriting criterion is not satisfied. The interface can include a graphical element linking a part of the status message with a displayed parameter of the contract. In another embodiment the method further comprises determining whether the underwriting parameters of the insurance contract satisfy underwriting criteria corresponding to a managing user with a greater scope of authority than the registered user.

US Patent:

8073717, Dec 6, 2011

Filed:

Jul 3, 2008

Appl. No.:

12/167598

Inventors:

Julian E. Pelenur - Marblehead MA, US
Paul Thomas Cummings - Westford MA, US
Joseph Pilkerton - Charlestown MA, US
John Belizaire - New York NY, US
Kelly Ann Lynch - Glastonbury CT, US
Jeffrey Jerome Glass - Arlington MA, US
Hao Chen - West Hartford CT, US
Thomas Albert Muldoon - Newburyport MA, US

Assignee:

Firstbest Systems, Inc. - Lexington MA

International Classification:

G06Q 40/00

US Classification:

705 4, 705 736, 705 38, 705 64, 705313, 706 47, 717108

Abstract:

Disclosed are systems for underwriting insurance contracts. In one embodiment a system comprises a rules database of business rules specifying one or more conditions based upon one or more underwriting parameters; a user database comprising entries corresponding to registered users; and a processor configured to: provide to the user a form having a plurality of data fields generated based upon the underwriting parameters specified in the business rules; receive a plurality of inputted underwriting parameters corresponding to the data fields; determine whether the inputted underwriting parameters satisfy the business rules; and if at least one of the inputted underwriting parameters does not satisfy the business rules, provide a status message indicating that at least one business rule is not satisfied. The status message can be provided in an interface that includes a graphical element linking a part of the status message with a portion of the displayed form.

US Patent:

62999745, Oct 9, 2001

Filed:

Sep 17, 1999

Appl. No.:

9/398149

Inventors:

Keith S. Shih - Harriman NY
Hao A. Chen - Chadds Ford PA

Assignee:

Mannington Mills of Delaware, Inc. - Wilmington DE

International Classification:

B32B 2740

US Classification:

428335

Abstract:

The present invention is directed to a barrier layer which has the ability to substantially prevent the diffusion of stains, such as plasticizers and dyes or other chemicals, onto a surface of a surface covering, from a surface or object in which the surface covering is placed upon. The barrier layer contains a polyamide or polyurethane and is preferably located above a substrate or base layer in a surface covering. The barrier layer preferably is located between a UV topcoat layer and a vinyl wear layer. The present invention also relates to a method of preventing stain migration onto a surface covering from a surface on which the surface covering is placed by use of the barrier layer of the present invention and also relates to methods of making surface coverings containing the barrier layer of the present invention.

US Patent:

60086114, Dec 28, 1999

Filed:

Nov 20, 1998

Appl. No.:

9/196788

Inventors:

Hao Chen - Plano TX
Edward N. Jeffrey - Garland TX
Fredrick W. Trafton - Lewisville TX

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

G05B 1128

US Classification:

318599

Abstract:

A method of driving an electric motor includes generating a periodic, driving voltage. The driving voltage comprises a sequence of first, second, and third waveforms. The first waveform in the sequence is a generally constant, high voltage. The second waveform in the sequence is a down hook voltage. The third waveform in the sequence is an up hook voltage. The method also includes applying the driving voltage to a coil of the motor to generate a generally sinusoidal current through the coil of the motor.

US Patent:

61631183, Dec 19, 2000

Filed:

Nov 20, 1998

Appl. No.:

9/197243

Inventors:

Hao Chen - Plano TX
Gregory Swize - Dallas TX
Bertram John White - Irvine CA

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

H02K 2300

US Classification:

318254

Abstract:

A method of detecting phase error between a phase current and a driving voltage includes generating a signal indicative of the phase current. The method includes identifying a time interval during which the signal indicative of the phase current is generally symmetric about a midpoint of the time interval when the phase error is approximately zero. The method further includes determining the extent to which the signal indicative of the phase current is symmetric about the midpoint of the time interval. Finally, in response to determining the extent to which the signal indicative of the phase current is symmetric, the method includes generating phase error information.

US Patent:

58912940, Apr 6, 1999

Filed:

Jun 16, 1997

Appl. No.:

8/876432

Inventors:

Keith S. Shih - Harriman NY
Hao A. Chen - Chadds Ford PA

Assignee:

Mannington Mills, Inc. - Salem NJ

International Classification:

B32B 3100

US Classification:

1563077

Abstract:

The present invention is directed to a barrier layer which has the ability to substantially prevent the diffusion of stains, such as plasticizers and dyes or other chemicals, onto a surface of a surface covering, from a surface or object in which the surface covering is placed upon. The barrier layer contains a polyamide or polyurethane and is preferably located above a substrate or base layer in a surface covering. The barrier layer preferably is located between a UV topcoat layer and a vinyl wear layer. The present invention also relates to a method of preventing stain migration onto a surface covering from a surface on which the surface covering is placed by use of the barrier layer of the present invention and also relates to methods of making surface coverings containing the barrier layer of the present invention.

US Patent:

59810580, Nov 9, 1999

Filed:

Sep 13, 1996

Appl. No.:

8/713422

Inventors:

Keith S. Shih - Harriman NY
Hao A. Chen - Chadds Ford PA

Assignee:

Mannington Mills, Inc. - Salem NJ

International Classification:

B32B 2734
B32B 2740

US Classification:

428335

Abstract:

The present invention is directed to a barrier layer which has the ability to substantially prevent the diffusion of stains, such as plasticizers and dyes or other chemicals, onto a surface of a surface covering, from a surface or object in which the surface covering is placed upon. The barrier layer contains a polyamide or polyurethane and is preferably located above a substrate or base layer in a surface covering. The barrier layer preferably is located between a UV topcoat layer and a vinyl wear layer. The present invention also relates to a method of preventing stain migration onto a surface covering from a surface on which the surface covering is placed by use of the barrier layer of the present invention and also relates to methods of making surface coverings containing the barrier layer of the present invention.

Author:

Hao Chen

ISBN #:

3540233881