Yuhuan Dr Xu

US Patent:

20070093889, Apr 26, 2007

Filed:

Aug 28, 2006

Appl. No.:

11/467847

Inventors:

Benjamin Wu - San Marino CA, US
Fernando Vinuela - Los Angeles CA, US
Yuichi Murayama - Los Angeles CA, US
Yuhuan Xu - Santa Monica CA, US

International Classification:

A61F 2/06

US Classification:

623001380

Abstract:

Non-fragmenting low friction bioactive absorbable coils are disclosed that improve long-term anatomic results in the endovascular treatment of intracranial aneurysms. The coils are composed of at least one biocompatible and bioabsorbable polymer. The coils are then coated with a polymer to reduce the friction. The coating can contain drugs, such as growth factors, and can be used to accelerate histopathologic transformation in aneurysms. The coil can be a polymer such as polyglycolic acid (PGA), poly-L-lactic acid (PLLA), polycaprolactive, poly-L-lactide, polydioxanone, polycarbonates, polyanhydrides, polyglycolic acid/poly-L-lactic acid copolymers, polyhydroxybutyrate/hydroxyvalerate copolymers, or combinations thereof.

US Patent:

20080290554, Nov 27, 2008

Filed:

Mar 31, 2005

Appl. No.:

10/593023

Inventors:

Benjamin M. Wu - Los Angeles CA, US
Michael V. Sofroniew - Los Angeles CA, US
Yuhuan Xu - Los Angeles CA, US

Assignee:

THE REGENTS OF THE UNIVERSITY OF CALIFORNIA - Oakland CA

International Classification:

B29C 44/56

US Classification:

26421112, 4251748 E

Abstract:

Devices for fabricating oriented polymer fibers, and methods for fabricating thereof by electropulling, are provided.

US Patent:

20130072959, Mar 21, 2013

Filed:

Jul 18, 2012

Appl. No.:

13/552616

Inventors:

Benjamin M. Wu - San Marino CA, US
Fernando Vinuela - Los Angeles CA, US
Yuichi Marayama - Los Angeles CA, US
Yuhuan Xu - Santa Monica CA, US

Assignee:

THE REGENTS OF THE UNIVERSITY OF CALIFORNIA - Oakland CA

International Classification:

A61M 29/00

US Classification:

606200

Abstract:

Non-fragmenting low friction bioactive absorbable coils are disclosed that improve long-term anatomic results in the endovascular treatment of intracranial aneurysms. The coils are composed of at least one biocompatible and bioabsorbable polymer. The coils are then coated with a polymer to reduce the friction. The coating can contain drugs, such as growth factors, and can be used to accelerate histopathologic transformation in aneurysms. The coil can be a polymer such as polyglycolic acid (PGA), poly-L-lactic acid (PLLA), polycaprolactive, poly-L-lactide, polydioxanone, polycarbonates, polyanhydrides, polyglycolic acid/poly-L-lactic acid copolymers, polyhydroxybutyrate/hydroxyvalerate copolymers, or combinations thereof.

US Patent:

62807943, Aug 28, 2001

Filed:

Nov 1, 1999

Appl. No.:

9/432046

Inventors:

Yuhuan Xu - Santa Monica CA
Bin Zhao - Irvine CA

Assignee:

Conexant Systems, Inc. - Newport Beach CA

International Classification:

B05D 512
B05D 302

US Classification:

427379

Abstract:

An improved dielectric material having pores formed therein and a method for forming the material are disclosed. The material is formed of a polymer. Pores within the polymer are formed by forming solid organic particles within the polymer and eventually vaporizing the particles to form pores within the polymer.

US Patent:

53426487, Aug 30, 1994

Filed:

Sep 23, 1992

Appl. No.:

7/949744

Inventors:

John D. MacKenzie - Los Angeles CA
Ren Xu - Los Angeles CA
Yuhuan Xu - Santa Monica CA

Assignee:

The Regents of the Universty of California - Oakland CA

International Classification:

B05D 512
C04B 3546

US Classification:

4271263

Abstract:

Amorphous ferroelectric materials are formed by a sol-gel type process and the ferroelectric properties stabilized by complete hydrolysis and polycondensation, and extraction of residual organic materials, preferably by heating at temperatures below the temperature at which crystallization may occur. Stable solutions of metal alkoxides are prepared by reacting or dissolving a metal alkoxide in alcohol such as absolute ethanol. The solution may be spincast on essentially any substrate, conductor or nonconductor, crystalline or amorphous, transparent or opaque, and even including plastics. Hydrolysis and polycondensation occur in situ to deposit an amorphous ferroelectric film. Residual alcohol is extracted by heating below the temperature at which crystallization occurs. Such films show P-E hysteresis loops and pyroelectric current. Such ferroelectric thin films are useable in electronic, opto-electronic and optical devices.

US Patent:

59470119, Sep 7, 1999

Filed:

Oct 30, 1998

Appl. No.:

9/183921

Inventors:

Yuhuan Xu - Santa Monica CA

International Classification:

A47J 2700
A47G 1900
A47G 2306
B65D 136

US Classification:

99357

Abstract:

A food plate for containing food and supporting a beverage container wherein the plate and beverage container are held together as a unit by one hand of a person. The food plate has a flat top surface and at least one depression formed therein for containing a food item. A first aperture formed in the plate is sized and shaped to allow passage of a beverage container partially therethrough and engage a mid portion of the beverage container such that the center of gravity of the container is even with or below the top surface of the plate and the lower portion of the container exterior is exposed on the underside of the plate. A second aperture formed in the plate adjacent to the first aperture is sized and shaped to receive the thumb of the person's hand from the underside of the plate. The person's hand is cupped around the exposed lower portion of the beverage container with the fingers gripping the exterior surface of the container, the plate is supported on the top of the cupped hand, and the tip of the thumb is selectively placed against the top surface of the plate or against the upper portion of the beverage container to securely hold the plate and the beverage container together as a single unit. In a preferred embodiment, the beverage container aperture is surrounded by circumferentially spaced tabs extending downwardly from the top surface and biased angularly inward in a radial direction to engage the side wall of the beverage container.