Patents Assigned to Feldmann Chemie
  • Composition and method for cleaning drinking water tanks
    Patent number: 4199469
    Abstract: A composition and method for cleaning tanks for drinking water, particularly for removing deposits consisting mainly of an agglomerate of algae, microorganisms and ochre sediments. The composition is an aqueous solution comprising about 3 to 6% of ascobic acid, 2 to 3% of formic acid, 7 to 10% of phosphoric acid, 1 to 3% of citric acid, 13 to 15% of hydrochloric acid and 10 to 15% of an aqueous isopropyl alcohol (all % by weight). The method involves spraying said aqueous solution under pressure onto the deposits.
    Type: Grant
    Filed: June 21, 1978
    Date of Patent: April 22, 1980
    Assignee: Feldmann Chemie
    Inventor: Michael Walzer