Patents by Inventor Donald R. Heelies

Donald R. Heelies 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).

  • Device for performing enzyme immunoassays
    Patent number: 4883760
    Abstract: The device has a transparent capillary assay tube attached at its upper end to a lateral portion of the support structure of the device. The lower free end of the assay tube is engageable with an absorbent material upon manual downward deflection of the support structure. The assay tube is filled through a funnel shaped aperture in the lateral portion of the device, and the tube is drained by engaging the lower free end of the tube with the absorbent material. By attaching appropriate antibody, antigen or hapten to the inner surface of the tube, immunoassays may be performed in the tube.
    Type: Grant
    Filed: June 20, 1988
    Date of Patent: November 28, 1989
    Assignee: Adi Diagnostics Inc.
    Inventor: Donald R. Heelies