Patents by Inventor Diane Halterman

Diane Halterman 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).

  • Manganese removal from aqueous industrial waste effluents
    Patent number: 4707273
    Abstract: A chemical treatment for the removal for manganese or manganese and fluoride from an aqueous waste effluent obtained from the acid-fluoride washing or alkali (non-fluoride) washing in a step in the manufacture of aluminum cans. The treatment consists of adding in an acid medium sufficient phosphate ion to react with the manganese and/or fluoride and thereafter adding in an alkali medium sufficient calcium ion to react with the manganese, phosphate and/or fluoride. The ratio of phosphate to calcium ion added is 3:1 to 1:2.5.
    Type: Grant
    Filed: May 5, 1986
    Date of Patent: November 17, 1987
    Assignee: Amchem Products
    Inventors: Diane Halterman, Thomas Henley