Tri N Tran

US Patent:

6346187, Feb 12, 2002

Filed:

Jan 21, 1999

Appl. No.:

09/234586

Inventors:

Tri D. Tran - Livermore CA
David J. Lenz - Livermore CA

Assignee:

The Regents of the University of California - Oakland CA

International Classification:

C25B 100

US Classification:

205342, 205743, 210748

Abstract:

An electrically regeneratable battery of electrochemical cells for capacitive deionization (including electrochemical purification) and regeneration of electrodes is operated at alternate polarities during consecutive cycles. By polarizing the cells, ions are removed from the electrolyte and are held in the electric double layers formed at the carbon aerogel surfaces of the electrodes. As the electrodes of each cell of the battery are saturated with the removed ions, the battery is regenerated electrically at a reversed polarity from that during the deionization step of the cycle, thus significantly minimizing secondary wastes.

US Patent:

6761809, Jul 13, 2004

Filed:

Jan 3, 2002

Appl. No.:

10/037288

Inventors:

Tri D. Tran - Livermore CA
David J. Lenz - Livermore CA

Assignee:

The Regents of the University of California - Oakland CA

International Classification:

B23H 304

US Classification:

2042861, 204284, 204280, 2042901

Abstract:

An electrically regeneratable battery of electrochemical cells for capacitive deionization (including electrochemical purification) and regeneration of electrodes is operated at alternate polarities during consecutive cycles. In other words, after each regeneration step operated at a given polarity in a deionization-regeneration cycle, the polarity of the deionization step in the next cycle is maintained. In one embodiment, two end electrodes are arranged one at each end of the battery, adjacent to end plates. An insulator layer is interposed between each end plate and the adjacent end electrode. Each end electrode includes a single sheet of conductive material having a high specific surface area and sorption capacity, preferably a sheet formed of carbon aerogel composite. The battery further includes a plurality of generally identical double-sided intermediate electrodes that are equidistally separated from each other, between the two end electrodes. As the electrolyte enters the battery of cells, it flows through a continuous open serpentine channel defined by the electrodes, substantially parallel to the surfaces of the electrodes.

US Patent:

6784690, Aug 31, 2004

Filed:

Sep 4, 2002

Appl. No.:

10/234657

Inventors:

Tri K. Tran - San Leandro CA
Cong K. Khieu - San Jose CA

Assignee:

Sun Microsystems, Inc. - Santa Clara CA

International Classification:

H03K 1716

US Classification:

326 30, 326 86, 326 83, 326 63, 326 81, 327108, 327112

Abstract:

Disclosed is an input/output (IO) device having a power supply node, an input node for receiving an input data signal, and an output node for outputting an output data signal generated in response to the input node receiving the input data bit signal. The IO device also includes a pull-up driver coupled to the power supply node and the output node, wherein the pull-up driver comprises an impedance at the output node which is constant for all voltages at the output node. Additionally, the IO device may have a circuit coupled to the input node, the pull-up driver, and the output node. This circuit is configured to generate a signal that is provided to the pull-up driver. The signal generated by the circuit varies as a function of the voltage at the output node.

US Patent:

7138042, Nov 21, 2006

Filed:

Mar 15, 2004

Appl. No.:

10/801246

Inventors:

Tri D. Tran - Livermore CA, US
David J. Lenz - Livermore CA, US

Assignee:

The Regents of the University of California - Oakland CA

International Classification:

C02F 1/469

US Classification:

204551, 2042302, 2042305

Abstract:

An electrically regeneratable battery of electrochemical cells for capacitive deionization (including electrochemical purification) and regeneration of electrodes is operated at alternate polarities during consecutive cycles. In other words, after each regeneration step operated at a given polarity in a deionization-regeneration cycle, the polarity of the deionization step in the next cycle is maintained. In one embodiment, two end electrodes are arranged one at each end of the battery, adjacent to end plates. An insulator layer is interposed between each end plate and the adjacent end electrode. Each end electrode includes a single sheet of conductive material having a high specific surface area and sorption capacity, preferably a sheet formed of carbon aerogel composite. The batter further includes a plurality of generally identical double-sided intermediate electrodes that are equidistally separated from each other, between the two end electrodes. As the electrolyte enters the battery of ells, t flows through a continuous open serpentine channel defined by the electrodes, substantially parallel to the surfaces of the electrodes.

US Patent:

7193447, Mar 20, 2007

Filed:

May 6, 2004

Appl. No.:

10/839941

Inventors:

Shao H. Liu - Cupertino CA, US
Tri K. Tran - San Leandro CA, US
Brian W. Amick - Brookline MA, US

Assignee:

Sun Microsystems, Inc. - Santa Clara CA

International Classification:

G01R 19/00
G11C 7/00
H03F 3/45

US Classification:

327 57, 327 55, 327 56

Abstract:

A sense amplifier latch that is operable to interface with high common-mode input voltages with wide ranges for all process variations. The sense amplifier latch comprises a cross-coupled latch having first and second rail signals; a pre-charge device; an equalization device; pass devices for enabling input devices to receive pad and reference inputs. In the present invention, the input devices comprise push-pull impedance dividers are used to preserve the input difference voltage while dramatically lowering the common-mode output voltage. The outputs of the impedance dividers are fed to the cross-coupled latch of the sense amplifier using n-channel pass gates.

US Patent:

7229454, Jun 12, 2007

Filed:

Jan 7, 2003

Appl. No.:

10/338514

Inventors:

Tri Tran - Fremont CA, US
Kim Nguyen - San Jose CA, US
Hanh Ho - San Jose CA, US
My Doan - San Jose CA, US
Richard Murphy - Sunnyvale CA, US
Michael P. Wallace - Fremont CA, US
Clifford Teoh - Los Altos CA, US

Assignee:

Boston Scientific Scimed, Inc. - Maple Grove MN

International Classification:

A61B 17/08

US Classification:

606157, 606200

Abstract:

Methods and devices for blocking orifices and occluding cavities within a patient are provided. The device in one variation comprises first and second tubular members attached to a collapsible sealing element. The device can be placed through an orifice and the collapsible sealing element can be collapsed to seal the orifice. An embolic may be introduced distal to the sealing element to occlude a cavity. The device may incorporate a locking mechanism which can be engaged to lock the sealing element into the collapsed position. The device may incorporate a valve to prevent flow through the tubular members, for example to prevent egress of the embolic from a cavity. The device can be detached to provide a permanent seal of the orifice, and can retain the embolic within the cavity. The device may be used in conjunction with a stent or other retention device to assist the sealing element in maintaining the seal.

US Patent:

7410482, Aug 12, 2008

Filed:

Dec 13, 2002

Appl. No.:

10/319379

Inventors:

Richard Murphy - Sunnyvale CA, US
Michael P. Wallace - Fremont CA, US
Tri Tran - Fremont CA, US
Kim Nguyen - San Jose CA, US
Hanh Ho - San Jose CA, US
My Doan - San Jose CA, US
Robert M. Abrams - Los Gatos CA, US
Harold F. Carrison - Pleasanton CA, US

Assignee:

Boston Scientific-Scimed, Inc. - Maple Grove MN

International Classification:

A61B 17/00

US Classification:

606 1, 606108, 606191, 606213

Abstract:

In one embodiment, a neck bridge for bridging the neck of an aneurysm includes a junction region, a number of radially extending array elements attached to the junction region, and a cover attached to one or both of the junction region and an array element. The array elements are configured to be positioned within the aneurysm after the neck bridge is deployed from a delivery device. In a second embodiment, the neck bridge includes a junction region and a braided or mesh-like structure secured to the junction region. The braided or mesh-like structure is made from an elastic material.

US Patent:

7713264, May 11, 2010

Filed:

Jul 23, 2008

Appl. No.:

12/178364

Inventors:

Richard Murphy - Sunnyvale CA, US
Michael P. Wallace - Pleasanton CA, US
Tri Tran - Fremont CA, US
Kim Nguyen - Irvine CA, US
Hanh Ho - San Jose CA, US
My Doan - San Jose CA, US
Robert M. Abrams - Los Gatos CA, US
Harold F. Carrison - Pleasanton CA, US

Assignee:

Boston Scientific Scimed, Inc. - Maple Grove MN

International Classification:

A61B 17/00

US Classification:

606 1, 606108, 606191, 606213

Abstract:

In one embodiment, a neck bridge for bridging the neck of an aneurysm includes a junction region, a number of radially extending array elements attached to the junction region, and a cover attached to one or both of the junction region and an array element. The array elements are configured to be positioned within the aneurysm after the neck bridge is deployed from a delivery device. In a second embodiment, the neck bridge includes a junction region and a braided or mesh-like structure secured to the junction region. The braided or mesh-like structure is made from an elastic material.