Patents by Inventor David M. B. Brown

David M. B. Brown 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).

  • Oil detector
    Patent number: 4137495
    Abstract: This invention is concerned with an oil detector comprising a pair of electrodes having therebetween a capillary channel of such a size that water and oil will be held therein by surface tension, and means for electrically connecting the electrodes to a measuring circuit.
    Type: Grant
    Filed: March 25, 1977
    Date of Patent: January 30, 1979
    Inventor: David M. B. Brown