Patents by Inventor Michael C. Northrup

Michael C. Northrup 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).

  • Process for producing a predetermined cesium compound
    Patent number: 6436879
    Abstract: Disclosed is a method for producing a predetermined cesium compound. The method comprises treating a cesium-containing material with a suitable reagent to dissolve at least a portion of the cesium contained in the material and form a slurry; adding a base comprising slaked lime or calcium carbonate and an acid containing the anion of the predetermined cesium compound to the slurry comprising the dissolved cesium; and separating the predetermined cesium compound.
    Type: Grant
    Filed: December 22, 1999
    Date of Patent: August 20, 2002
    Assignee: Cabot Corporation
    Inventors: Patrick M. Brown, Michael C. Northrup, Bart F. Bakke
  • Process for producing purified cesium compound from cesium alum
    Patent number: 6015535
    Abstract: Disclosed is a method for producing a predetermined cesium compound. The method comprises treating a cesium-containing material with a suitable reagent to dissolve at least a portion of the cesium contained in the material and form a slurry; adding a base comprising slaked lime or calcium carbonate and an acid containing the anion of the predetermined cesium compound to the slurry comprising the dissolved cesium; and separating the predetermined cesium compound.
    Type: Grant
    Filed: May 19, 1997
    Date of Patent: January 18, 2000
    Assignee: Cabot Corporation
    Inventors: Patrick M. Brown, Michael C. Northrup, Bart F. Bakke