Patents by Inventor William Eric Cunningham

William Eric Cunningham 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).

  • Apparatus for determining the concentration of microorganisms
    Patent number: 3972778
    Abstract: A method of, and apparatus for, the detection of particles or organisms, particularly faecal coliform, in which the fluid under test is dispensed drop-by-drop onto a moving absorbent surface. The surface is of such a nature, and/or is so treated that the organisms form discrete visible colonies which can be counted photo-electrically after incubation.
    Type: Grant
    Filed: November 8, 1973
    Date of Patent: August 3, 1976
    Inventor: William Eric Cunningham