David Liu

US Patent:

6360457, Mar 26, 2002

Filed:

Jun 28, 2000

Appl. No.:

09/607516

Inventors:

Yi-Ming Qui - City of Industry CA 91748
David Liu - City of Industry CA 91748
Joanne Yang - City of Industry CA 91748

International Classification:

A61F 514

US Classification:

36140, 36136, 36141, 36 43, 600 15

Abstract:

A health care shoe, which can continuously provide adequate magnetic field arranged to penetrate through the wearers foot for improving the wearers blood circulation and metabolism, includes a sole; an insole placed on top the sole, which has a plurality of magnet cavities formed and distributed thereon; a shoe body rigidly attached on top of the sole to define a foot chamber between the shoe body and the insole; a plurality of base magnet elements fittingly received in the magnet cavities respectively provided on the insole; and a plurality of upper magnet elements embedded inside the shoe body with respect to the positions of the base magnet elements located on the insole, wherein each of the upper magnet elements is arranged to constitute a transversal magnetic field penetrating through the foot chamber and flowing towards one of the base magnet elements. Moreover, the sole further has at least a medicine receiving cavity to receive a medicine unit which contains a medicine tablet made of painkiller or Chinese medical herb being incased therein. The medicine unit further includes a bottom magnet element positioned thereunder so as to produce magnetic filed around the medicine unit.

US Patent:

6461129, Oct 8, 2002

Filed:

Feb 23, 2001

Appl. No.:

09/791515

Inventors:

David Liu - Vernon Hills IL

Assignee:

MAT Automotive Inc. - Buffalo Grove IL

International Classification:

F03C 200

US Classification:

418 552, 418 555, 418 57, 418107

Abstract:

A scroll type apparatus for fluid displacement is disclosed. In one embodiment, the apparatus includes an adjustment mechanism capable of being adjusted after assembly of the apparatus to close an axial gap between scroll members and account for manufacturing tolerances in apparatus components. In another embodiment, the apparatus includes an orbital scroll of two portions, with a supporting portion surrounding an eccentric bearing of higher density than that of a scroll portion. The center of mass of the orbital scroll is thus moved towards the eccentric bearing to reduce torquing of the scroll as it orbits. In a further embodiment, the apparatus includes an orbital scroll having two portions, a supporting portion surrounding an eccentric bearing having a lower coefficient of thermal expansion than that of a scroll portion, to reduce thermal expansion of the supporting portion, reducing misaligmnent of the eccentric orbital scroll on the bearing.

US Patent:

6898846, May 31, 2005

Filed:

Aug 21, 2002

Appl. No.:

10/224639

Inventors:

David Liu - Gaithersburg MD, US
Chengping Zhang - Rockville MD, US
Michael T. Duignan - Washington DC, US

Assignee:

Potomac Photonics, Inc. - Lanham MD

International Classification:

H05K003/30

US Classification:

29832, 29830, 29833, 29852

Abstract:

A method for manufacturing a modular electrical circuit includes the steps of pre-manufacturing a plurality of components having fine features such as resistors, capacitors, inductances, and conductors formed on a dielectric substrate. The pre-manufactured components are laminated each to the other in a predetermined order. Each pre-manufactured component includes one or more electrical elements of the same type coupled each to the other by conducting lines. Each dielectric substrate includes through vias filled with the conductive material which serve for cross-coupling of the elements of neighboring components. Position of the passive elements, as well as conductive lines and through vias, are pre-designed to allow precise coordination between the elements of different components in the multi-layered modular electrical circuit.

US Patent:

7106598, Sep 12, 2006

Filed:

Jun 14, 2004

Appl. No.:

10/865807

Inventors:

David Liu - Gaithersburg MD, US
Chengping Zhang - Rockville MD, US
Michael T Duignan - Washington DC, US

Assignee:

Potomac Photonics, Inc. - Lanham MD

International Classification:

H05K 1/00
H05K 1/11
H05K 7/02

US Classification:

361766, 361811, 361761, 361793, 174262

Abstract:

A method for manufacturing a modular electrical circuit includes the steps of pre-manufacturing a plurality of components having fine features such as resistors, capacitors, inductances, and conductors formed on a dielectric substrate. The pre-manufactured components are laminated each to the other in a predetermined order. Each pre-manufactured component includes one or more electrical elements of the same type coupled each to the other by conducting lines. Each dielectric substrate includes through vias filled with the conductive material which serve for cross-coupling of the elements of neighboring components. Position of the passive elements, as well as conductive lines and through vias, are pre-designed to allow precise coordination between the elements of different components in the multi-layered modular electrical circuit.

US Patent:

7960600, Jun 14, 2011

Filed:

Nov 20, 2009

Appl. No.:

12/622824

Inventors:

Stanley J. Frey - Palatine IL, US
Jason T. Corradi - Arlington Heights IL, US
Richard S. Kempf - Deerfield IL, US
David W. Liu - Palatine IL, US

Assignee:

UOP LLC - Des Plaines IL

International Classification:

C07C 7/12
C07C 7/04

US Classification:

585478, 585820, 585805, 585828

Abstract:

Meta-xylene is recovered from admixture with other Caromatic hydrocarbons including ortho-xylene by liquid phase adsorptive separation. Performance is improved by reducing the concentration of ortho-xylene through adding a sidecut to a prefractionator preparing the feedstock to adsorptive separation.

US Patent:

8213800, Jul 3, 2012

Filed:

Jul 17, 2009

Appl. No.:

12/504899

Inventors:

David Hwa-Wei Liu - Herndon VA, US
James M. Hallam - Oswego IL, US

Assignee:

Tellabs Operations, Inc. - Naperville IL

International Classification:

H04B 10/00

US Classification:

398115, 398 72, 398141

Abstract:

A wireless communication network system includes a central office network, a plurality of cell sites, each for communicating wirelessly with external cellular phones within its transmission range, and a passive optical network (PON)-based wireless backhaul system that transfers communication information between the cell sites and the central office network. The PON-based wireless backhaul system further includes at least a source optical network terminal (ONT), an optical line terminal (OLT), and a quality of service (QoS) converter in each of the source ONT and OLT to allow for quality of service-enabled communication between the cell sites and the central office network via the PON-based wireless backhaul system.

US Patent:

8566460, Oct 22, 2013

Filed:

Sep 15, 2010

Appl. No.:

12/882424

Inventors:

David Hwa-Wei Liu - Herndon VA, US
Edward J. Krzyzanowski - Naperville IL, US
James M. Hallam - Oswego IL, US

Assignee:

Tellabs Operations, Inc. - Naperville IL

International Classification:

G06F 15/16

US Classification:

709228

Abstract:

A method and apparatus for establishing a network connection using a temporary Internet Protocol (“IP”) address are disclosed. The process, in one embodiment, is operable to detect link status from a link which is connected to a port of an access device. After identifying a link configuration from a set of predefined link configurations in accordance with the link status, an interface corresponding to the link configuration is enabled. Once a temporary IP address associated with the interface is assigned, the process sends a message indicating that the access device is reachable via the link in accordance with the temporary IP address.

US Patent:

20030048918, Mar 13, 2003

Filed:

Sep 7, 2001

Appl. No.:

09/949282

Inventors:

Geoffrey Dillon - Los Angeles CA, US
Paul Sauer - Los Angeles CA, US
Donald North - Los Angles CA, US
Dai Lee - Los Angeles CA, US
Robert Goodman - Laguna Niquel CA, US
David Liu - Arcadia CA, US

International Classification:

H04R001/02
G08B021/00

US Classification:

381/395000, 181/150000, 248/231900, 381/386000, 381/087000, 361/600000

Abstract:

An acoustic transducer is secured to a plate having a front side and a back side. The transducer has an outer body with a front portion and rear portion and is sized to entirely fit inside an electrical gang box. A front-to-back enlarged opening in the plate is sized to receive the front portion of the transducer body. The transducer is secured to the plate so that the front portion is located within the front-to-back opening of the plate and is generally flush with the front side of the plate and most of the transducer body including the rear portion extends behind the plate into the gang box.

Address:

4564 S Christiana Ave, Chicago, IL 60632

Phone:

7732540131

VIN:

2T2BK1BA4AC021564

Make:

LEXUS

Model:

RX 350

Year:

2010