Patents by Inventor Dudley B. Thomas

Dudley B. Thomas 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: 7488606
    Abstract: A device for collecting oral liquids includes a lateral flow chromatography strip having a collection member. The collection member is separated from the remainder of the chromatography strip by a liquid impermeable removable barrier which prevents liquid in the collection member from entering the chromatography strip. Once adequate oral liquid has been collected (as indicated by a sample sufficiency indicator), the barrier is removed to allow oral liquids to flow through the strip. The liquids interact with binding partners in the strip to provide test results, such as an indication that an analyte of interest is present in the liquid. The strip may be contained in a housing with an access opening through which the removable barrier may be manipulated, and windows through which test results may be viewed. This device avoids reflux of reagents from the strip into the mouth of a test subject during use.
    Type: Grant
    Filed: August 19, 2005
    Date of Patent: February 10, 2009
    Assignee: QuantRX Biomedical Corporation
    Inventors: William H. Fleming, Timothy P. Hyatt, Dudley B. Thomas
  • Patent number: 6998273
    Abstract: A device for collecting oral liquids includes a lateral flow chromatography strip having a collection pad for insertion into the mouth. The collection pad is separated from the remainder of the chromatography strip by a liquid impermeable removable barrier which prevents liquid in the collection pad from entering the chromatography strip. Once adequate oral liquid has been collected (as indicated by a sample sufficiency indicator), the device is withdrawn from the mouth and the barrier is removed to allow oral liquids to flow through the strip. The liquids interact with binding partners in the strip to provide test results, such as an indication that an analyte of interest is present in the liquid. The strip may be contained in a housing with an access opening through which the removable barrier may be manipulated, and windows through which test results may be viewed. This device avoids reflux of reagents from the strip into the mouth of a test subject during use.
    Type: Grant
    Filed: April 1, 2002
    Date of Patent: February 14, 2006
    Assignee: A-Fem Medical Corporation
    Inventors: William H. Fleming, Timothy P. Hyatt, Dudley B. Thomas
  • Patent number: 6365417
    Abstract: A device for collecting oral liquids includes a lateral flow chromatography strip having a collection pad for insertion into the mouth. The collection pad is separated from the remainder of the chromatography strip by a liquid impermeable removable barrier which prevents liquid in the collection pad from entering the chromatography strip. Once adequate oral liquid has been collected (as indicated by a sample sufficiency indicator), the device is withdrawn from the mouth and the barrier is removed to allow oral liquids to flow through the strip. The liquids interact with binding partners in the strip to provide test results, such as an indication that an analyte of interest is present in the liquid. The strip may be contained in a housing with an access opening through which the removable barrier may be manipulated, and windows through which test results may be viewed. This device avoids reflux of reagents from the strip into the mouth of a test subject during use.
    Type: Grant
    Filed: February 9, 2000
    Date of Patent: April 2, 2002
    Assignee: A-Fem Medical Corporation
    Inventors: William H. Fleming, Timothy P. Hyatt, Dudley B. Thomas