Patents Assigned to Four Seasons Venture Capital AB
  • Method of purifying ground water
    Patent number: 4755304
    Abstract: A process for the purification of ground water is disclosed which comprises injecting conditioned water into a recharge well, simultaneously withdrawing water from an adjacent recharge well in order to create a purification zone therebetween, and withdrawing purified water from a supply well in an aquifer.
    Type: Grant
    Filed: January 6, 1986
    Date of Patent: July 5, 1988
    Assignee: Four Seasons Venture Capital AB
    Inventors: Rolf O. Hallberg, Rudolf H. Martinell