Patents by Inventor Frederick Mahn

Frederick Mahn 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).

  • Foam prevention in sodium carbonate crystallization
    Patent number: 4104033
    Abstract: In crystallization of a carbonate of sodium from aqueous solutions, a water soluble homopolymer of oxyethylene or block copolymer of oxyethylene and oxypropylene is employed as a defoamer. The presence of the defoamer in the resulting sodium carbonate does not adversely interfere with carbon dioxide absorption in subsequent production of sodium bicarbonate.
    Type: Grant
    Filed: May 20, 1976
    Date of Patent: August 1, 1978
    Assignee: Drew Chemical Corporation
    Inventors: Frederick Mahn, Kenneth Breindel, Clyde Scanley, David Sexsmith