Patents by Inventor William J. Berry, Jr.

William J. Berry, Jr. 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).

  • Conductivity cell with adjustable concentric electrodes
    Patent number: 4767995
    Abstract: A conductivity cell is presented having a solid inner electrode and a hollow electrode whereby the inner electrode is adjustably mounted. The adjustable feature allows the cell to be accurately calibrated for various fluids having a wide range of conductivities.
    Type: Grant
    Filed: December 11, 1986
    Date of Patent: August 30, 1988
    Inventor: William J. Berry, Jr.
  • Combined conductivity monitor and controller
    Patent number: D271684
    Type: Grant
    Filed: March 10, 1980
    Date of Patent: December 6, 1983
    Assignee: Darco Water Systems, Inc.
    Inventor: William J. Berry, Jr.