Patents by Inventor Jan Maria Joseph Thewissen

Jan Maria Joseph Thewissen 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).

  • Preparation of satin white
    Patent number: 6994746
    Abstract: The present invention relates to a process for preparing satin white, wherein aluminum sulfate and calcium hydroxide are brought together batchwise in a planetary kneader mixer and react to form satin white. The satin white obtained by the present process has a superior quality and can be prepared in a very efficient manner.
    Type: Grant
    Filed: January 14, 2002
    Date of Patent: February 7, 2006
    Assignee: Ankerpoort, N.V.
    Inventors: Alois Johannes Gerardus Aarts, Jurgen Johannes Adrianus Broekman, Jan Maria Joseph Thewissen, Geert Dijkstra