Patents by Inventor Dave Chapman

Dave Chapman 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: 20200129609
    Abstract: The present invention provides an attenuated African Swine Fever (ASF) virus which lacks a functional version of the following genes: multigene-family 360 genes 9L, 10L, 11L, 12L, 13L and 14L; and multigene-family 505 genes 1R, 2R, 3R and 4R. The invention further provides an attenuated African Swine Fever (ASF) virus which Lacks a functional version of the DP148R gene. The present invention also provides a vaccine comprising such an attenuated virus and its use to prevent ASF. Further, the invention relates to intranasal administration of an attenuated ASF virus.
    Type: Application
    Filed: October 30, 2019
    Publication date: April 30, 2020
    Inventors: Charles Abrams, Ana-Luisa Reis, Chris Netherton, Linda Dixon, Dave Chapman, Pedro Sanchez-Cordon
  • Patent number: 10507237
    Abstract: The present invention provides an attenuated African Swine Fever (ASF) virus which lacks a functional version of the following genes: multigene-family 360 genes 9L, 10L, 11L, 12L, 13L and 14L; and multigene-family 505 genes 1R, 2R, 3R and 4R. The invention further provides an attenuated African Swine Fever (ASF) virus which lacks a functional version of the DP148R gene. The present invention also provides a vaccine comprising such an attenuated virus and its use to prevent ASF. Further, the invention relates to intranasal administration of an attenuated ASF virus.
    Type: Grant
    Filed: June 19, 2015
    Date of Patent: December 17, 2019
    Assignee: The Pirbright Institute
    Inventors: Charles Abrams, Ana-Luisa Reis, Chris Netherton, Linda Dixon, Dave Chapman, Pedro Sanchez-Cordon
  • Publication number: 20170136114
    Abstract: The present invention provides an attenuated African Swine Fever (ASF) virus which lacks a functional version of the following genes: multigene-family 360 genes 9L, 10L, 11L, 12L, 13L and 14L; and multigene-family 505 genes 1R, 2R, 3R and 4R. The invention further provides an attenuated African Swine Fever (ASF) virus which lacks a functional version of the DP148R gene. The present invention also provides a vaccine comprising such an attenuated virus and its use to prevent ASF. Further, the invention relates to intranasal administration of an attenuated ASF virus.
    Type: Application
    Filed: June 19, 2015
    Publication date: May 18, 2017
    Applicant: THE PIRBRIGHT INSTITUTE
    Inventors: Charles Abrams, Anna-Luisa Reis, Chris Netherton, Linda Dixon, Dave Chapman, Pedro Sanchez-Cordon
  • Patent number: 7642833
    Abstract: A timer circuit is disclosed. The timer, having a delay configured to track inversely with temperature of the memory device, includes a reference signal configured to increase in voltage, as the temperature of the memory device increases. The reference signal may be generated from a current that is derived from a bandgap reference circuit. The timer circuit includes a pull-down path made up of a plurality of selectable pull down transistors which are coupled to the reference signal at the gate. Resistance of the pull-down path is reduced as the reference signal is increased and the reduced resistance of the pull-down path decreases the delay of timer. A plurality of selectable delay elements may be preconfigured to adjust the delay and are coupled to the output path of the current starved inverter.
    Type: Grant
    Filed: March 16, 2004
    Date of Patent: January 5, 2010
    Assignee: Cypress Semiconductor Corporation
    Inventors: Chris Smith, Dave Chapman, Tim Fiscus
  • Patent number: 6938139
    Abstract: A method and system for updating and maintaining cache coherency across nodes in a cluster. The method uses a combination of read and write locks on the instances of the cache, with some embodiments using a master locking database. Periodic validations of timestamps are used to identify lack of coherency of the cache, such as resulting from a network failure.
    Type: Grant
    Filed: October 4, 2002
    Date of Patent: August 30, 2005
    Assignee: JP Morgan Chase Bank
    Inventors: Lawrence Miller, Mike Moore, Zhengrong Chiu, Hansen Wang, Dave Chapman, Andy Peterson
  • Patent number: 6735140
    Abstract: A method of performing memory operations of a memory device having precharge, read and write states is disclosed. The method includes refreshing the memory device provided a refresh timer expired and the memory device is in the precharge state. The method further includes entering the precharge state, refreshing the memory device and returning to the read state provided the memory device is in the read state for a predetermined period of time. The memory device is refreshed provided the memory device is transitioning from the read state to the write state and the refresh timer has expired.
    Type: Grant
    Filed: December 19, 2002
    Date of Patent: May 11, 2004
    Assignee: Cypress Semiconductor Corporation
    Inventors: Tim Fiscus, Dave Chapman
  • Publication number: 20030236957
    Abstract: A method and system for updating and maintaining cache coherency across nodes in a cluster. The method uses a combination of read and write locks on the instances of the cache, with some embodiments using a master locking database. Periodic validations of timestamps are used to identify lack of coherency of the cache, such as resulting from a network failure.
    Type: Application
    Filed: October 4, 2002
    Publication date: December 25, 2003
    Inventors: Lawrence Miller, Mike Moore, Zhengrong Chiu, Hansen Wang, Dave Chapman, Andy Peterson
  • Patent number: D250657
    Type: Grant
    Filed: March 16, 1977
    Date of Patent: December 26, 1978
    Assignee: Burgess Vibrocrafters, Inc.
    Inventors: Kurt F. Mizen, Dave Chapman