David A Chen

US Patent:

20100305596, Dec 2, 2010

Filed:

Mar 3, 2010

Appl. No.:

12/717035

Inventors:

Erik William Peterson - Walnut Creek CA, US
David E-bin Chen - Fremont CA, US

International Classification:

A61F 9/007

US Classification:

606171

Abstract:

A non-linear cut-rate multiplier for a vitreous cutter is provided whereby a signal from a host drive system may be multiplied in non-linear fashion to achieve significantly higher cut-rates for the vitreous cutter. Depending upon the cut-rate received from the host drive system, the multiplier may be configured to generate a subsequent cut-rate which is, potentially, linear for lower cut-rates of the host drive system and variably non-linear for higher cut-rates of the host drive system.

US Patent:

20130305292, Nov 14, 2013

Filed:

May 10, 2012

Appl. No.:

13/468451

Inventors:

David W. Chen - Ashburn VA, US
Vipul B. Patel - Great Falls VA, US
Kenneth L. Gould - Reston VA, US
Jian Yu - Ashburn VA, US

International Classification:

H04N 21/643
H04N 21/462

US Classification:

725 54, 725110

Abstract:

Techniques disclosed herein include systems and methods for transmitting TV program related content to IP connected devices on a home network, or other local area network. Users can watch television while simultaneously receiving content related to TV programs currently being displayed on a television. TV centric and TV program related content can be transmitted to IP connected devices. Moreover, this TV program related content can be displayed at the same time as a television program is being displayed on a television. As such, the system can provide media synchronization within home network using the set-top box as a gateway for delivering the content. Users can watch TV at home, and at the same time receive TV program related content on a laptop, tablet computer, mobile phone, etc.

US Patent:

45432210, Sep 24, 1985

Filed:

Oct 21, 1981

Appl. No.:

6/313443

Inventors:

David T. Chen - Clayton CA
Robert D. Mahoney - San Ramon CA

Assignee:

CD Medical, Inc. - Miami FL

International Classification:

B29D 2700

US Classification:

264 41

Abstract:

Improved cellulose semipermeable hollow fibers useful in detoxifying blood during hemodialysis or hemofiltration treatments. The cellulose fibers are fine, capillary fibers that are made by melt extrusion of certain cellulose ester polyol melt spin compositions into self-supporting gelled fibers. The cellulose ester gelled fibers are subsequently chemically converted into cellulose fibers by deacetylation, in aqueous alkali solution. The product fibers exhibit improved wet intrinsic tensile strength and higher water permeability characteristics than heretofore known cellulose fibers made from cellulose ester spin compositions. The invention includes the method of making the improved fibers and separatory cells such as hemodialyzers or hemofilters which contain the improved fibers in a gamma ray sterilized condition.

US Patent:

20210368224, Nov 25, 2021

Filed:

Aug 4, 2021

Appl. No.:

17/393436

Inventors:

- St. Louis MO, US
David CHEN - Ashburn VA, US
Vipul PATEL - Great Falls VA, US
Kenneth GOULD - Reston VA, US

International Classification:

H04N 21/2668
H04N 21/442

Abstract:

Methods, systems and devices are provided for communicating multimedia content over a service provider network. A network server may receive an audio-video stream from a content provider server, relaying the audio-video stream to a receiver device via the service provider network, receive an operating mode notification identifying a user behavior from the receiver device, and ceasing the relaying of the audio-video stream to the receiver device based on the user behavior. The network server may also alter the audio-video stream based on the received operating mode notification and send the altered audio-video stream to the receiver device via the service provider network.

US Patent:

20210247154, Aug 12, 2021

Filed:

Feb 12, 2021

Appl. No.:

17/174486

Inventors:

- San Leandro CA, US
Erik W. Peterson - Walnut Creek CA, US
David Chen - Fremont CA, US

International Classification:

F28F 25/12
F28F 21/08

Abstract:

A heat exchange system for a surgical instrument includes a valve, a load, and a load conduit extending between the valve and the load. The load conduit delivers fluid from the valve to the load. The heat exchange system also includes an exhaust conduit that directs the fluid away from the valve. A portion of the load conduit is positioned so as to thermally transfer heat to a portion of the exhaust conduit.

US Patent:

20200092598, Mar 19, 2020

Filed:

Nov 21, 2019

Appl. No.:

16/690488

Inventors:

- St. Louis MO, US
David Chen - Ashburn VA, US
Vipul Patel - Great Falls VA, US
Kenneth Gould - Reston VA, US

International Classification:

H04N 21/2668
H04N 21/442

Abstract:

Methods, systems and devices are provided for communicating multimedia content over a service provider network. A network server may receive an audio-video stream from a content provider server, relaying the audio-video stream to a receiver device via the service provider network, receive an operating mode notification identifying a user behavior from the receiver device, and ceasing the relaying of the audio-video stream to the receiver device based on the user behavior. The network server may also alter the audio-video stream based on the received operating mode notification and send the altered audio-video stream to the receiver device via the service provider network.

US Patent:

20190098353, Mar 28, 2019

Filed:

Nov 30, 2018

Appl. No.:

16/206774

Inventors:

- New York NY, US
David Chen - Ashburn VA, US
Vipul Patel - Great Falls VA, US
Kenneth Gould - Reston VA, US

International Classification:

H04N 21/2668
H04N 21/442

Abstract:

Methods, systems and devices are provided for communicating multimedia content over a service provider network. A network server may receive an audio-video stream from a content provider server, relaying the audio-video stream to a receiver device via the service provider network, receive an operating mode notification identifying a user behavior from the receiver device, and ceasing the relaying of the audio-video stream to the receiver device based on the user behavior. The network server may also alter the audio-video stream based on the received operating mode notification and send the altered audio-video stream to the receiver device via the service provider network.

US Patent:

20170353752, Dec 7, 2017

Filed:

Aug 22, 2017

Appl. No.:

15/682832

Inventors:

- New York NY, US
David CHEN - Ashburn VA, US
Vipul PATEL - Great Falls VA, US
Kenneth GOULD - Reston VA, US

International Classification:

H04N 21/2668
H04N 21/442
H04N 21/24

Abstract:

Methods, systems and devices are provided for communicating multimedia content over a service provider network. A network server may receive an audio-video stream from a content provider server, relaying the audio-video stream to a receiver device via the service provider network, receive an operating mode notification identifying a user behavior from the receiver device, and ceasing the relaying of the audio-video stream to the receiver device based on the user behavior. The network server may also alter the audio-video stream based on the received operating mode notification and send the altered audio-video stream to the receiver device via the service provider network.

Address:

19932 Hazeltine Pl, Ashburn, VA 20147

VIN:

WBAVA33567KX76401

Make:

BMW

Model:

3 SERIES

Year:

2007