Patents Assigned to Diagnostic Chemicals Limited
  • Publication number: 20040115795
    Abstract: Immunoassay analytical test apparatus for allergy diagnosis, which apparatus comprises a zone for receiving a sample containing an analyte, a zone for receiving a mobile phase (the zone may be the same as the sample receiving zone, or different thereto), a detection means for permitting detection of the analyte by immunoreaction, a first flow path for flow of the analyte in the mobile phase from the sample receiving zone to the detection means, and a second flow path permitting flow of a mobile phase to the detection means.
    Type: Application
    Filed: November 21, 2003
    Publication date: June 17, 2004
    Applicant: CLINICAL DIAGNOSTIC CHEMICALS LIMITED
    Inventor: John Rees
  • Patent number: 6689317
    Abstract: Immunoassay analytical test apparatus for allergy diagnosis, which apparatus comprises a zone for receiving a sample containing an analyte, a zone for receiving a mobile phase (the zone may be the same as the sample receiving zone, or different thereto), a detection means for permitting detection of the analyte by immunoreaction, a first flow path for flow of the analyte in the mobile phase from the sample receiving zone to the detection means, and a second flow path permitting flow of a mobile phase to the detection means.
    Type: Grant
    Filed: November 15, 1999
    Date of Patent: February 10, 2004
    Assignee: Clinical Diagnostic Chemicals Limited
    Inventor: John Rees
  • Patent number: 6555386
    Abstract: The apparatus for collection of a liquid sample (such as a sample of body fluid) includes a tube with a hollow bore extending longitudinally between a first open end and a second open end. The second end is longitudinally spaced from the first open end and the first end has a capillary opening for uptake of the liquid sample by capillary action. The capillary opening has a first axis and a second axis substantially perpendicular thereto. The first axis has a length greater than the internal diameter of the bore, and the second axis has a length less than the internal diameter of the bore. In use the capillary opening is contacted with the liquid sample to be collected. The liquid sample is taken up by capillary action into the bore without introduction of air into the bore.
    Type: Grant
    Filed: July 20, 2000
    Date of Patent: April 29, 2003
    Assignee: Clinical Diagnostic Chemicals Limited
    Inventor: John Rees
  • Patent number: 6001658
    Abstract: An apparatus in the form of a test strip is useful for determining the presence of one or more components in a fluid sample. The test strip can be used by itself or in conjunction with an associated housing assembly. The test strip provides a rapid volume, timing and temperature independent visually readable strip for the semi-quantitative detection of a component, such as an analyte.
    Type: Grant
    Filed: September 13, 1996
    Date of Patent: December 14, 1999
    Assignee: Diagnostic Chemicals Limited
    Inventor: Robert A. Fredrickson
  • Patent number: 5656502
    Abstract: A test strip holder includes an elongated hollow member having an open end and a closed end. A support is provided that positions a test strip within the elongated hollow member spaced from inner walls of the elongated hollow member. At least one vent is positioned between the open end and the closed end of the elongated hollow member. The distance from the open end to the at least one vent opening defines the maximum height of liquid able to enter the elongated hollow member from the open end other than by capillary action. The elongated member may be formed as a tubular conduit. Alternatively, the elongated member may include a test strip receiving part and a test strip covering part, wherein the test strip receiving part may or may not be hingedly connected to the test strip covering part.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: August 12, 1997
    Assignee: Diagnostic Chemicals Limited
    Inventors: Dana H. MacKay, Robert A. Fredrickson