Patents by Inventor Brian G. Tobey

Brian G. Tobey 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).

  • Purification of sulfuryl fluroide by selective adsorption
    Patent number: 4950464
    Abstract: Many impurities of sulfuryl fluroide are removed by selective adsorption on activated alumina and activated carbon. Thionyl fluoride, hydrogen fluoride, hydrogen chloride, and water are removed by treating contaminated sulfuryl fluoride with activated alumina. Sulfur dioxide and 1,2-dichloroethane are removed by treating contaminated sulfuryl fluoride with activated carbon. When sulfuryl fluoride is treated with the two adsorbents in sequence, sulfuryl fluoride of exceptionally high purity is obtained.
    Type: Grant
    Filed: February 10, 1989
    Date of Patent: August 21, 1990
    Assignee: The Dow Chemical Company
    Inventors: George S. Fujioka, Brian G. Tobey, David D. Friese