David Chen 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:

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.

US Patent:

20040168119, Aug 26, 2004

Filed:

Feb 24, 2003

Appl. No.:

10/374409

Inventors:

David Liu - Granada Hills CA, US
Gerald Berman - Santa Monica CA, US
Richard Gray - Los Angeles CA, US

International Classification:

G06F015/00

US Classification:

715/501100

Abstract:

The present invention discloses a method, apparatus, and article of manufacture for creating a report on a computer. In accordance with an embodiment of the present invention, one or more nodes of a decision tree are displayed to a user. Information about the displayed nodes are then received from a user. The information includes at least one selected node. The structured report is converted into a report based on the selected nodes. In another embodiment of the present invention, the structured report is stored in a database that is connected to the computer. In a further embodiment, the structured report is electronically distributed via the Internet. The invention has utility for dynamically creating a structured report that can be accessed instantaneously.

US Patent:

20080032800, Feb 7, 2008

Filed:

May 31, 2007

Appl. No.:

11/756518

Inventors:

Tom Liu - Walnut CA, US
David Liu - Walnut CA, US

International Classification:

A63F 13/00

US Classification:

463042000

Abstract:

A device which allows an individual to play poker with other, remotely located individuals over a network, the device comprising two screens and a game console. A top screen on the device is positioned over a bottom screen and is adapted to slide or fold open to allow viewing of the bottom screen. The device includes memory and software installed on the device in order to allow game play. The software can enable the display of avatars which exhibit alternative facial or other features that display emotion and that are selected by a user. Also included is a system which enables remotely located individual users of the gaming device to engage in gaming together.

US Patent:

61518077, Nov 28, 2000

Filed:

Jan 30, 1999

Appl. No.:

9/240791

Inventors:

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

International Classification:

A61F 514
A13B 706

US Classification:

36140

Abstract:

A health care shoe, which can continuously provide adequate magnetic field arranged to penetrate through the wearer's foot for improving the wearer's blood circulation and metabolism, includes a sole having a plurality of magnet cavities specifically indented and distributed on an inner surface thereof, a shoe body which includes a vamp and sides rigidly attached on top of the sole to define a foot chamber between the shoe body and the sole; an insole placed on the sole inside the foot chamber; a plurality of base magnet elements fittingly received in the magnet cavities respectively; and a plurality of upper magnet elements embedded inside the shoe body with respect to the positions of the base magnet elements, wherein the upper magnet elements are arranged to enable magnetic fields flowing between the base magnet elements and the upper 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:

61525650, Nov 28, 2000

Filed:

Dec 31, 1997

Appl. No.:

9/001339

Inventors:

David D. Liu - Irvine CA
Joe Wakil - Houston TX
Ken Carbonari - Houston TX
Greg Abbott - Spring TX

Assignee:

Premier Laser Systems, Inc. - Irvine CA

International Classification:

A61B 310

US Classification:

351212

Abstract:

A corneal topography system incorporating a handheld unit, a base unit and a computer. The handheld unit includes a placido projector, a light source and a camera that receives the image of the placido image being reflected off of the patient's cornea. The light source is preferably comprised of a lightweight luminescent panel such as an EL panel. The handheld unit further includes a laser and a display that are used to properly align the handheld unit with respect to the patient's cornea into a desired orientation. The resulting reflected image is captured when the handheld unit is in the desired orientation and this image can then be used to obtain corneal topography data for the patient's eye.

US Patent:

42694396, May 26, 1981

Filed:

Jul 30, 1979

Appl. No.:

6/061921

Inventors:

James M. Warwick - Whittier CA
David C. Liu - Walnut CA

Assignee:

Utility Trailer Manufacturing Company - Industry CA

International Classification:

E05C 1910

US Classification:

292246

Abstract:

A door holdback device holds a door or panel in open position. It may be mounted upon the wall of a conventional boxlike highway trailer and is automatically retractable to an inoperative position. The holdback device has a primary wire loop extending from the wall, said primary loop being integrally attached to two secondary wire loops, which are then secured to the interior of the wall. The secondary wire loops are internally stressed to retract the primary loop when not in use. A second embodiment employs an internally stressed primary loop which moves about its supporting mount to assume an operative position.

US Patent:

20210356098, Nov 18, 2021

Filed:

May 15, 2020

Appl. No.:

16/875733

Inventors:

David Da Liu - Rancho Cucamonga CA, US

International Classification:

F21V 14/06
F21V 23/00
F21V 23/04
F21V 23/06
F21V 5/04
F21V 21/30
F21V 21/08

Abstract:

An integrated light emitting diode (LED) device includes an LED light source coupled to a base. The device also includes a controller coupled to a bottom portion of the base. The device also includes a switch coupled to the controller, the switch toggling the controller. The device also includes a controller box comprising an aperture coupled to the base, the controller box encasing the controller and a portion of the switch, an actuator of the switch extending through the aperture. The device also includes an electrical coupler coupled to a recess of the controller box. The device also includes a lens holder coupled to a top portion of the base. The device also includes a lens coupled to the lens holder.

Author:

David Y. Liu

ISBN #:

0716770105

Author:

David Liu

ISBN #:

0801984882

Author:

David Liu

ISBN #:

0765608162

Author:

David Liu

ISBN #:

0765608170

Author:

David Liu

ISBN #:

0849399718