David C 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:

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:

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:

20220258407, Aug 18, 2022

Filed:

Jun 26, 2020

Appl. No.:

17/622077

Inventors:

- Colombes, FR
David LIU - King of Prussia PA, US
Evan FISHER - Malvern PA, US

Assignee:

Arkema France - Colombes

International Classification:

B29C 64/118
B29C 64/314
B29C 64/364
B33Y 10/00
B33Y 30/00
B33Y 40/00
B33Y 40/20
B33Y 70/00
B33Y 80/00

Abstract:

The invention relates to an additive manufacturing process by extrusion for forming a three-dimensional part in an additive manufacturing machine having a build environment, the process comprising:The invention also relates to a filament and its use in said additive manufacturing process and the corresponding object obtainable from said additive manufacturing process.

US Patent:

20200339798, Oct 29, 2020

Filed:

Oct 15, 2018

Appl. No.:

16/759414

Inventors:

- Colombes, FR
David Shin-Ren LIU - Bala Cynwyd PA, US
Mahendra Christopher ORILALL - Downingtown PA, US

International Classification:

C08L 53/02
C08F 287/00
C08K 3/08
C08K 3/18
C08K 3/34
C08F 2/50
C08F 220/18

Abstract:

Nanostructured polymeric compositions having a plurality of phases are prepared by the curing of compositions containing a first reactive component (such as a hydrophilic reactive component), a second reactive component (such as a hydrophobic reactive component) and a block copolymer, the first reactive component and second reactive component exhibiting visible separation at 25 C. in the absence of the block copolymer.

US Patent:

20200325323, Oct 15, 2020

Filed:

May 31, 2017

Appl. No.:

16/305123

Inventors:

David Shin-Ren LIU - Bala Cynwyd PA, US
Jack J. REILLY - Blue Bell, PA, US
Mark A. AUBART - West Chester PA, US
- King of Prussia PA, US

International Classification:

C08L 33/08
C08L 67/04
C08L 1/12
B29C 64/118
B29C 64/321

Abstract:

The invention relates to an acrylic alloy composition that can be 3-D printed by a material extrusion additive manufacturing process, to an acrylic filament that has a very uniform diameter useful in the extrusion additive manufacturing process, to acrylic articles made from the acrylic alloy composition by a material extrusion additive process, and to a material extrusion additive manufacturing process for producing the acrylic articles. The acrylic alloy composition is an alloy of an acrylic polymer, and a low melt viscosity polymer, such as polylactic acid. The alloy may optionally be impact modified, preferably with hard core core-shell impact modifiers.

US Patent:

20190202961, Jul 4, 2019

Filed:

Jul 6, 2017

Appl. No.:

16/325770

Inventors:

- Colombes, FR
David Shin-Ren LIU - Bala Cynwyd PA, US
Marie Elizabeth SULLIVAN MALERVY - Downingtown PA, US

International Classification:

C08F 299/02
B29C 64/112
B29C 64/264
C08K 5/07
C08K 5/06
C08K 5/09
C08K 5/5397
C08F 2/48
C08L 51/00
C08F 220/18
C08F 220/54

Abstract:

Embodiments described herein are directed to polymerization-induced phase-separating (PIPS) compositions for enhancement of impact resistance and rheological properties in photocurable resins for 3D printing, such as for inks, coatings and adhesives. Embodiments described herein are advantageous with respect to properties such as impact resistance, shear adhesion and cohesive strength. The PIPS compositions may include components X, Y and Z, wherein X includes an acrylic based monomer; Y includes a copolymer of block A and block B; and Z includes a multifunctional cross-linker. Methods of using the PIPS compositions are also described. Also described are methods of screening potential acrylic based monomeric or oligomeric additives that yield improved impact resistance.

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