Patents by Inventor David Alan Percival

David Alan Percival 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).

  • Patent number: 7481977
    Abstract: A device for fluid assay comprising a carousel (12), mounted about a hub (14), disposed in a complementary shaped housing (16). The carousel (12) is divided into a plurality of chambers (20, 22, 24, 26, 28, 30) disposed radially about the hub (14). The chambers (20, 22, 24, 26, 28, 30) are arranged into pairs which are disposed diametrically opposite one another and which communicate with each other via the hub (14).
    Type: Grant
    Filed: September 6, 2001
    Date of Patent: January 27, 2009
    Assignee: Bio-Rad Laboratories, Inc.
    Inventors: David Alan Percival, David Aubrey Plumptre
  • Publication number: 20040248316
    Abstract: The present invention relates to a device for use in fluid assay, in particular for assaying body fluids such as blood and urine. The device comprises a sample reservoir for a fluid sample to be assayed, the reservoir having an inlet port and an outlet port. The device comprises a fluid sample receiving zone in fluid communication with the reservoir via the inlet port and an excess fluid sample detection zone in fluid communication with the reservoir via the outlet port.
    Type: Application
    Filed: July 27, 2004
    Publication date: December 9, 2004
    Inventors: David Alan Percival, David Aubrey Plumptre
  • Publication number: 20040038422
    Abstract: A device for fluid assay comprising a carousel (12), mounted about a hub (14), disposed in a complementary shaped housing (16). The carousel (12) is divided into a plurality of chambers (20, 22, 24, 26, 28, 30) disposed radially about the hub (14). The chambers (20, 22, 24, 26, 28, 30) are arranged into pairs which are disposed diametrically opposite one another and which communicate with each other via the hub (14).
    Type: Application
    Filed: July 22, 2003
    Publication date: February 26, 2004
    Inventors: David Alan Percival, David Aubrey Plumptre
  • Patent number: 6300142
    Abstract: A apparatus for assaying glycated proteins and other analytes in biological samples such as blood, in which a sample is presented to the apparatus, includes an inlet port between moveable between first and second inlets, such that the inlet can be brought into liquid communication with each inlet in turn. The inlet port accommodates a filter or binder. The apparatus also includes a microprocessor operable via a key pad, at least one light emitter and at least one light detector, a display and driver, and an A to D converter, and is operatively connected to a power source.
    Type: Grant
    Filed: May 26, 2000
    Date of Patent: October 9, 2001
    Assignee: Provalis Diagnostics LTD
    Inventors: David Andrewes, John Worthington Attridge, David Griffiths, John Phillip Vessey, John Anthony Odell, Felix Fernando, Anthony Stevenson, Mark Gresswell, John Curtis, David Alan Percival
  • Patent number: D443539
    Type: Grant
    Filed: June 7, 1999
    Date of Patent: June 12, 2001
    Assignee: Provalis Diagnostics Limited
    Inventors: Anthony Stevenson, Mark Cresswell, John Curtis, David Alan Percival, David Andrewes, Anthony O'Dell, John Attridge, John Phillip Vessey, Felix Fernando
  • Patent number: D510141
    Type: Grant
    Filed: February 2, 2004
    Date of Patent: September 27, 2005
    Inventors: David Alan Percival, David Aubrey Plumptre
  • Patent number: D447713
    Type: Grant
    Filed: June 7, 1999
    Date of Patent: September 11, 2001
    Assignee: Provalis Diagnostics Limited
    Inventors: Anthony Stevenson, Mark Cresswell, John Curtis, David Alan Percival, David Andrewes, Anthony O'Dell, John Attridge, John Phillip Vessey, Felix Fernando
  • Patent number: D514227
    Type: Grant
    Filed: July 31, 2003
    Date of Patent: January 31, 2006
    Assignee: Provalis Diagnostics Limited
    Inventors: David Alan Percival, David Aubrey Plumptre