Patents Assigned to Darco Water Systems, Inc.
  • Water purification unit and method
    Patent number: 4280912
    Abstract: The present invention consists of apparatus for purifying water in a continuous manner which removes suspended, dissolved and organic matter and provides water with a neutral pH and having a minimum electrical resistance of 18 Meg ohms for applications requiring ultra-pure water for research and commercial applications.
    Type: Grant
    Filed: November 5, 1979
    Date of Patent: July 28, 1981
    Assignee: Darco Water Systems, Inc.
    Inventors: W. James Berry, III, William J. Berry
  • 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.