Patents by Inventor Marinus J. Baadsgaard

Marinus J. Baadsgaard 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).

  • Regeneration of scale-coated activated carbon with acid wash
    Patent number: 4169812
    Abstract: A method for regenerating scale-coated activated carbon used to treat crude sodium carbonate solutions in which the scale-coated carbon is acid washed with an aqueous solution containing from 1 to 15% by weight hydrochloric acid and from 0.5 to 3% by weight ammonium bifluoride.
    Type: Grant
    Filed: March 7, 1978
    Date of Patent: October 2, 1979
    Assignee: FMC Corporation
    Inventors: David W. Smith, Marinus J. Baadsgaard
  • Production of sodium carbonate
    Patent number: 4021527
    Abstract: Method of preparing refined, dense soda ash from crude trona by calcining the crude trona to crude sodium carbonate, mixing the crude sodium carbonate with an aqueous solution of soda ash or water to form a substantially saturated crude sodium carbonate solution containing coarse and fine insolubles, clarifying the crude sodium carbonate solution, passing the clarified sodium carbonate solution upwardly through an expanded carbon bed to remove organic impurities, evaporating the carbon-treated sodium carbonate solution to crystallize sodium carbonate monohydrate crystals, separating the sodium carbonate monohydrate crystals and calcining them to dense soda ash.
    Type: Grant
    Filed: July 16, 1975
    Date of Patent: May 3, 1977
    Assignee: Intermountain Research and Development Corporation
    Inventor: Marinus J. Baadsgaard