Wei He Li

7005185, Feb 28, 2006

Nov 27, 2002

10/307201

Wei (Helen) Li - Puyallup WA, US
Kishio Miwa - Shiga, JP

Toray Composites (America), Inc. - Tacoma WA

B32B 27/38

428413, 528119, 528120, 528121, 528327, 528363, 528365, 523427, 523428, 523466, 523468, 525404

An epoxy composition includes an epoxy resin, a latent curing agent, and a catalyst. The composition includes two epoxide groups per molecule, and the latent curing agent is preferably a dicyanopolyamide, and most preferably dicyandiamide. The catalyst includes 2,4-toluene bis dimethyl urea, preferably in a concentration exceeding 70% by weight. The composition can be used in prepregs. The relative concentrations of the epoxy resin, curing agent, and catalyst are selected to achieve desired properties, including specific curing times and temperatures, and glass transition temperatures that enable a cured resin composition to be removed from a mold after being heated to its curing temperature, without being cooled. Exemplary formulations have reduced cure times, at both high and low curing temperatures, as compared to prior art formulations.

7763456, Jul 27, 2010

Sep 28, 2007

11/864698

Wei Li - Shoreline WA, US
Hai Wang - Seattle WA, US

University of Washington - Seattle WA

C12M 3/00
C12Q 1/02

4352885, 435 29

A polymeric chip having at least one three-dimensional porous scaffold, a microfluidic channel inlet to the porous scaffold, and a microfluidic channel outlet from the porous scaffold. In one embodiment, the polymeric chip has two three-dimensional porous scaffolds: one scaffold comprises liver cells and the other scaffold comprises cancer cells. The chip can be used as a multi-organ tissue model system.

7804970, Sep 28, 2010

Oct 24, 2005

11/257383

Rick Hippe - Snohomish WA, US
Wei Li - Bothell WA, US
Allan Coleman - Edmonds WA, US

SonoSite, Inc. - Bothell WA

H04R 25/00
A61B 8/14

381191, 310334, 367153

Systems and methods which improve the directivity of a transducer array by reducing electrical cross-talk between conductors connected to individual transducer array elements through the use of a plurality of interconnect circuits are shown. A plurality of signal transmission path circuits, such as circuit boards, flexible printed circuits, etc. , are used to provide electrical power to and receive signals from transducer elements of a transducer array. Embodiments couple transducer elements to conductive traces of the signal transmission path circuits in a manner such that adjacent transducer elements are not connected to conductive traces on the same signal transmission path circuit. In some embodiments, a plurality of signal transmission path circuits are offset such that two identical signal transmission path circuits can be used to provide connectivity to array transducer elements using more widely spaced conductive traces, thus reducing electrical cross-talk effects.

8079957, Dec 20, 2011

Nov 18, 2005

11/283436

Qinglin Ma - Bellevue WA, US
Gianluca Paladini - Skillman NJ, US
Wei Li - East Brunswick NJ, US

Siemens Medical Solutions USA, Inc. - Malvern PA

A61B 8/00

600438, 600437

Ultrasound imaging is synchronized with measurements. Generating three-dimensional representations is synchronized with measuring one or more parameters. For example, measurements are preformed based on navigating through a volume. The measurements are linked to the corresponding three-dimensional representations. As another example, the user selects a measurement from a graph. A three-dimensional representation of the volume associated with the selected measurement is presented.

8403557, Mar 26, 2013

Sep 27, 2007

11/863077

Wei Li - Shoreline WA, US
Hai Wang - Seattle WA, US

University of Washington - Seattle WA

B01F 5/00

366340, 366336

A micromixer is fabricated using a selective high intensity focused ultrasound foaming technique. The micromixer employs a 3D porous region for effective mixing. The 3D porous micromixer can achieve sufficient mixing results with a short mixing length for flows with a Reynolds number as low as 0. 1. The fabrication process of the micromixer is rapid, low-cost, and biocompatible. The pore size of the micromixer can be controlled by adjusting the selective high intensity focused ultrasound foaming parameters. The micromixer has potential for use in lab-on-a-chip and micro-total-analysis devices.

20030082385, May 1, 2003

Jul 13, 2001

09/905264

Wei Li - Puyallup WA, US
Kishio Miwa - Shiga, JP

Toray Composites (America), Inc.

B32B027/38

428/417000

An epoxy composition including an epoxy resin, a latent amine curing agent, and a specific catalyst. Preferably, the epoxy resin includes two epoxide groups per molecule, and the latent amine curing agent is a dicyanopolyamide, most preferably, dicyandiamide. The specific catalyst is preferably 2,4-toluene bis dimethyl urea. A prepreg employing the epoxy composition of the present invention can achieve a 95% cure in about one half of the time required by a prepreg that differs only in the catalyst employed. Furthermore, prepregs employing the epoxy composition of the present invention have glass transition temperatures higher than the curing temperatures when cured at a temperature range from about 80 C. to about 150 C., enabling cured prepregs to be removed from molds without being cooled. Use of the prepregs of the present invention thus enables composite component manufacturers to substantially increase production rates without requiring the use of additional molds.

20080041827, Feb 21, 2008

May 10, 2007

11/747069

Wei Li - Shoreline WA, US
Daniel Cerjanec - Shelby Township MI, US
Gerald A. Grzadzinski - Sterling Heights MI, US

B23K 11/24

219109

A resistance spot welding monitoring system includes a plurality of sensors coupled to a resistance spot welding system to receive welding data produced during a welding operation. The monitoring system further includes a nugget prediction system. The welding data is indicative of welding parameters used to produce the weld nugget. The nugget prediction system retrieves the welding data and predicts a nugget size based upon the welding data received from the plurality of sensors. Additionally, the nugget prediction system generates a nugget size signal. The monitoring system also includes an indicator that receives the nugget size signal and notifies an operator of a predicted nugget size.

20190351453, Nov 21, 2019

May 16, 2019

16/413999

- Bothell WA, US
Wei Li - Bothell WA, US

B06B 1/06
H01L 41/09
H01L 41/047

A PMUT ultrasound transducer includes a number of PMUT transmitting elements in a membrane layer. Behind each PMUT transmitting element is a cavity in the membrane layer. The cavities are partially or completely filled with a damping material to reduce ringing of the PMUT transmitting elements. Suitable damping materials include polymers, e.g., soft epoxies, benzocyclobutene or polyimide that are dispersed into the cavities or a phase changing material such as Parylene that precipitates out of a gas phase as a polymer when cured.