Patents by Inventor Joseph P. Theunissen

Joseph P. Theunissen 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).

  • Granular alkali metal silicate production
    Patent number: 5340559
    Abstract: Alkali metal silicate solutions are formed into granules in a single stage. The heated solution is sprayed into a heated drum having a multiplicity of arms fixed to a rapid by rotating central shaft. A gas, preferably air, heated to 150.degree. C. to 200.degree. C. is also introduced with the silicate solution and a granulated product is obtained from the other end of the drum.
    Type: Grant
    Filed: July 2, 1992
    Date of Patent: August 23, 1994
    Assignee: Unilever Patent Holdings B.V.
    Inventors: Francois Delwel, Theo J. Osinga, Joseph P. Theunissen, Jack M. Vrancken