Patents by Inventor David John Hardman

David John Hardman 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).

  • Biochemical and immunochemical assay device
    Patent number: 7303923
    Abstract: We describe an assay device which comprises (a) a substrate comprising: (i) a porous material capable of chromatographically transporting a liquid and (ii) one or more test reagents for an assay provided on the porous material; and (b) a water-impermeable coating polymer attached to the porous material so as to define a continuous bibulous compartment.
    Type: Grant
    Filed: September 10, 2002
    Date of Patent: December 4, 2007
    Assignee: Diamatrix Limited
    Inventors: David John Hardman, James Howard Slater, Adam G. Reid, William Kenneth Lang, James Richard Jackson
  • Biochemical and immunochemical assay device
    Publication number: 20030103869
    Abstract: We describe an assay device which comprises (a) a substrate comprising: (i) a porous material capable of chromatographically transporting a liquid and (ii) one or more test reagents for an assay provided on the porous material; and (b) a water-impermeable coating polymer attached to the porous material so as to define a continuous bibulous compartment.
    Type: Application
    Filed: September 10, 2002
    Publication date: June 5, 2003
    Applicant: DIAMATRIX LIMITED
    Inventors: David John Hardman, James Howard Slater, Adam G. Reid, William Kenneth Lang, James Richard Jackson
  • Biochemical and immunochemical assay device
    Patent number: 6573108
    Abstract: An assay device comprising: (a) a substrate comprising: (i) a porous material capable of chromatographically transporting a liquid; and (ii) one or more test reagents for an assay provided on the porous material; and (b) a transparent water-impermeable coating polymer attached to the porous material so as to define a continuous bibulous compartment.
    Type: Grant
    Filed: November 14, 1999
    Date of Patent: June 3, 2003
    Assignee: Diamatrix Limited
    Inventors: David John Hardman, James H. Slater, Adam G. Reid, William K. Lang, James Richard Jackson