Patents by Inventor David Chan

David Chan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20060011027
    Abstract: The present invention provides for an apparatus for coring and slicing a food item comprising: a) a peripheral member; b) a coring element; and c) a plurality of blades extending radially of the coring element to the peripheral member, in spaced relation about the coring element. The apparatus may be combined with a base for securing the food item. Methods of constructing the apparatus are also encompassed by the present invention.
    Type: Application
    Filed: July 16, 2004
    Publication date: January 19, 2006
    Applicant: Browne & Co.
    Inventors: David Chan, David Green, Neal Ho
  • Publication number: 20060014139
    Abstract: Five-Helix protein, which comprises the three N-helices and at least two, but not three, of the three C-helices of the trimer-of-hairpin structure of HIV gp41, separated by linkers, such as amino acid residue linkers, is disclosed. Six-Helix protein, which includes the three N-helices and the three C-helices of the trimer-of-hairpin structure of HIV gp41, separated by linkers, is also disclosed.
    Type: Application
    Filed: June 13, 2005
    Publication date: January 19, 2006
    Applicant: Whitehead Institute for Biomedical Research
    Inventors: Michael Root, Michael Kay, David Chan, Peter Kim
  • Patent number: 6988250
    Abstract: In a computing platform, a trusted hardware device (24) is added to the motherboard (20). The trusted hardware device (24) is configured to acquire an integrity metric, for example a hash of the BIOS memory (29), of the computing platform. The trusted hardware device (24) is tamper-resistant, difficult to forge and inaccessible to other functions of the platform. The hash can be used to convince users that that the operation of the platform (hardware or software) has not been subverted in some way, and is safe to interact with in local or remote applications. In more detail, the main processing unit (21) of the computing platform is directed to address the trusted hardware device (24), in advance of the BIOS memory, after release from ‘reset’.
    Type: Grant
    Filed: February 15, 2000
    Date of Patent: January 17, 2006
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Graeme John Proudler, Dipankar Gupta, Liqun Chen, Siani Lynne Pearson, Boris Balacheff, Bruno Edgard Van Wilder, David Chan
  • Publication number: 20060007610
    Abstract: An electrical extension cord includes a leakage current detector interrupter (LCDI) with reset lockout that can interrupt the power being supplied a line side of the cord to a corded appliance or to household wiring when a leakage current is detected flowing from any of the wires in the load side of the cord to a shield within the cord. The LCDI may be enclosed in a housing on a plug end of the cord that includes the plug for connection to the line.
    Type: Application
    Filed: March 25, 2005
    Publication date: January 12, 2006
    Inventors: David Chan, Roger Bradley, James Richter
  • Publication number: 20050284756
    Abstract: The invention includes a coil support assembly having an insulator interfacing a surface of a shield disposed within a processing chamber. The insulator has an extension which extends through the shield. A second insulator is disposed between the shield and a coil and contacts a protrusion extending from the coil. A fastener is disposed through the first insulator and extends through the second insulator and into the protrusion. The fastener is electrically isolated from the shield by the first insulator. The invention includes coil assemblies containing the described coil support configuration. The invention further includes a method of supporting a coil within a processing chamber having a shield disposed therein. Insulators are inserted to extend from an outer side of the shield through a thickness of the shield. A coil is mounted within the chamber by inserting fasteners through each insulator into bosses which-protrude outwardly from the coil body.
    Type: Application
    Filed: June 28, 2004
    Publication date: December 29, 2005
    Inventors: Len Hom, John Mize, Robert Prater, David Chan, Gilbert Amador, Peter Kang
  • Publication number: 20050280962
    Abstract: A resettable circuit interrupting device having a switch and timer circuit connected to the line side of the interrupting device to cause a leakage current to flow for a defined interval of time when power is applied. The timer and switch circuit comprises a timer powered by current from the phase leg of the device which is designed to operate for a defined interval of time. The timer starts operating when power is applied to the circuit interrupting device and normally continues to operate for the defined interval to time. Upon completion of the timed interval, the timer turns itself off and stays off until power is again applied to the device after an interruption. When power is first applied to the interrupting device, the timer is energized from the phase leg and causes the switch to close which connects the neutral leg on the line side of the interrupting device to a ground terminal.
    Type: Application
    Filed: August 29, 2005
    Publication date: December 22, 2005
    Inventors: David Chan, Steve Campolo
  • Publication number: 20050259936
    Abstract: A new class of surface plasmon waveguides is presented. The basis of these structures is the presence of surface plasmon modes, supported on the interfaces between the dielectric regions and the flat unpatterned surface of a bulk metallic substrate. The waveguides discussed here are promising to have significant applications in the field of nanophotonics by being able to simultaneously shrink length, time and energy scales, allowing for easy coupling over their entire bandwidth of operation, and exhibiting minimal absorption losses limited only by the intrinsic loss of the metallic substrate. These principles can be used for many frequency regimes (from GHz and lower, all the way to optical).
    Type: Application
    Filed: May 6, 2005
    Publication date: November 24, 2005
    Inventors: Aristeidis Karalis, David Chan, Yoel Fink, Kerwyn Huang, Mihai Ibanescu, John Joannopoulos, Elefterios Lidorikis, Evan Reed, Marin Soljacic
  • Publication number: 20050245170
    Abstract: A computer-implemented method for process control in chemical mechanical polishing in which an initial pre-polishing thickness of a substrate is measured at a metrology station, a parameter of an endpoint algorithm is determined from the initial thickness of the substrate, a substrates is polished at a polishing station, and polishing stops when an endpoint criterion is detected using the endpoint algorithm.
    Type: Application
    Filed: June 23, 2005
    Publication date: November 3, 2005
    Inventors: Boguslaw Swedek, Bret Adams, Sanjay Rajaram, David Chan, Manoocher Birang
  • Publication number: 20050221294
    Abstract: Inhibitors of HIV membrane fusion and a method of identifying drugs or agents which inhibit binding of the N-helix coiled-coil and the C helix of HIV gp41 envelope protein.
    Type: Application
    Filed: November 12, 2004
    Publication date: October 6, 2005
    Applicant: Whitehead Institute for Biomedical Research
    Inventors: Debra Eckert, David Chan, Vladimir Malashkevich, Peter Carr, Peter Kim
  • Publication number: 20050206493
    Abstract: An MOV element is physically and electrically connected to a heat sensitive material which changes from a low impedance path to a high impedance path, such as a spark gap, when the temperature of the MOV element rises to a temperature below that at which the MOV will enter into its thermal runaway state. More specifically, the heat sensitive material is located on a surface of the MOV and is electrically connected in series with the MOV. In operation, as the MOV gets hot, it heats the heat sensitive material. As the heat sensitive material gets hot, it starts to separate from the surface of the MOV to form a spark gap which is electrically connected in series with the MOV element to help dissipate excessive voltage.
    Type: Application
    Filed: March 19, 2004
    Publication date: September 22, 2005
    Inventors: David Chan, Roger Bradley, John Power
  • Patent number: 6939198
    Abstract: A computer-implemented method for process control in chemical mechanical polishing in which an initial pre-polishing thickness of a substrate is measured at a metrology station, a parameter of an endpoint algorithm is determined from the initial thickness of the substrate, a substrates is polished at a polishing station, and polishing stops when an endpoint criterion is detected using the endpoint algorithm.
    Type: Grant
    Filed: December 27, 2002
    Date of Patent: September 6, 2005
    Assignee: Applied Materials, Inc.
    Inventors: Boguslaw A. Swedek, Bret W. Adams, Sanjay Rajaram, David A. Chan, Manoocher Birang
  • Patent number: 6937452
    Abstract: A resettable circuit interrupting device having a switch and timer circuit connected to the line side of the interrupting device to cause a leakage current to flow for a defined interval of time when power is applied. The timer and switch circuit comprises a timer powered by current from the phase leg of the device which is designed to operate for a defined interval of time. The timer starts operating when power is applied to the circuit interrupting device and normally continues to operate for the defined interval to time. Upon completion of the timed interval, the timer turns itself off and stays off until power is again applied to the device after an interruption. When power is first applied to the interrupting device, the timer is energized from the phase leg and causes the switch to close which connects the neutral leg on the line side of the interrupting device to a ground terminal.
    Type: Grant
    Filed: January 23, 2004
    Date of Patent: August 30, 2005
    Assignee: Leviton Manufacturing Co., Inc.
    Inventors: David Chan, Steve Campolo
  • Publication number: 20050161292
    Abstract: An axle assembly includes a shaft supported for rotation within an axle housing. The housing is mountable to a trailing arm pivotal relative to a vehicle. The axle shaft includes a hub mounted on a first end for mounting of a wheel. A rotor is mounted to a second portion of the axle. The second portion of the axle shaft and rotor is mounted at a position inboard of any portion of the wheel rim. Mounting of the rotor outside any portion of the wheel rim allows the rotor, caliper, and actuator to be configured without constraints on size and cooling concerns inherent with brake assemblies positioned within the circumference of the wheel rim.
    Type: Application
    Filed: January 23, 2004
    Publication date: July 28, 2005
    Inventors: Daniel Chien, Martin Peaker, David Chan, Garry Brereton, Peter Gibbens, Paul Roberts, Paul Thomas, Jonathan Jackson
  • Publication number: 20050162513
    Abstract: A vehicle mounted, navigation device is disclosed. This invention combines a global position system (GPS) with an image capturing system into a portable device that can be optimally mounted within a vehicle. It can be used for land, air and sea vehicles. The image capturing system detects and interprets visual information to provide the vehicle operator with appropriate navigational guidance assistance and to alert operator of potentially hazardous conditions. Additionally, the device has the capability to store consecutive frames of detected, visual information so as to enable the device to be used for accident aftermath analysis and the documentation of an event or scene.
    Type: Application
    Filed: November 16, 2004
    Publication date: July 28, 2005
    Applicant: Advanced Future Technologies, Inc.
    Inventor: David Chan
  • Publication number: 20050157439
    Abstract: A suppression and protection circuit is used in conjunction with a circuit interrupter. In one configuration, a voltage clamping device such as a metal oxide varistor is utilized in a ground fault circuit interrupter product for handling transient surges and overvoltage conditions and is placed in series with a solenoid coil. The suppression and protection circuit includes a crowbar device across the line such as a header spark gap to prevent overvoltages, and a low pass filter such as an LC filter for suppressing transient surges.
    Type: Application
    Filed: March 14, 2005
    Publication date: July 21, 2005
    Inventors: David Chan, Eugene Shafir
  • Publication number: 20050140477
    Abstract: Resettable circuit interrupting devices, such as GFCI devices, that include a reset lockout mechanism, an independent trip mechanism and reverse wiring protection. A conical reset plunger is notched to force a successful test before reset.
    Type: Application
    Filed: December 6, 2004
    Publication date: June 30, 2005
    Inventors: Frantz Germain, Stephen Stewart, Roger Bradley, David Chan, Nichalas Disalvo, William Ziegler
  • Publication number: 20050053917
    Abstract: Described are the crystal structure of the ?-helical domain of the gp41 component of HIV-1 envelope glycoprotein which represents the core of fusion-active gp41, methods of identifying and designing drugs which inhibit gp41 function and drugs which do so.
    Type: Application
    Filed: October 7, 2003
    Publication date: March 10, 2005
    Applicant: Whitehead Institute for Biomedical Research
    Inventors: David Chan, Deborah Fass, Min Lu, James Berger, Peter Kim
  • Publication number: 20040265042
    Abstract: A fluid-dispensing cleaning tool is described comprising a body defining a fluid reservoir within it and a pump assembly carried by the body in fluid communication with the fluid reservoir for dispensing fluid to a cleaning head attached to the body. The pump assembly is operable to control the dispensing of the fluid from the reservoir to the cleaning head. The cleaning head may be releasably attached to the tool.
    Type: Application
    Filed: April 26, 2004
    Publication date: December 30, 2004
    Applicant: Browne & Co.
    Inventors: David Chan, Matthew Frank
  • Publication number: 20040257725
    Abstract: A resettable circuit interrupting device having a switch and timer circuit connected to the line side of the interrupting device to cause a leakage current to flow for a defined interval of time when power is applied. The timer and switch circuit comprises a timer powered by current from the phase leg of the device which is designed to operate for a defined interval of time. The timer starts operating when power is applied to the circuit interrupting device and normally continues to operate for the defined interval to time. Upon completion of the timed interval, the timer turns itself off and stays off until power is again applied to the device after an interruption. When power is first applied to the interrupting device, the timer is energized from the phase leg and causes the switch to close which connects the neutral leg on the line side of the interrupting device to a ground terminal.
    Type: Application
    Filed: January 23, 2004
    Publication date: December 23, 2004
    Inventors: David Chan, Steve Campolo
  • Patent number: 6830943
    Abstract: Embodiments of the invention include a calibration standard for semiconductor metrology tools. The standard comprises a substrate having a surface with a calibration layer formed thereon. A protective layer is formed over the underlying calibration layer. The calibration layer and protective layer are each formed to precise tolerances. The invention also includes methods for forming a calibration standard for semiconductor metrology tools.
    Type: Grant
    Filed: November 4, 2003
    Date of Patent: December 14, 2004
    Assignee: LSI Logic Corporation
    Inventors: Wai Lo, David Chan