Patents by Inventor Peter Theodorus Witte

Peter Theodorus Witte 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 the preparation of an aqueous colloidal precious metal suspension
    Patent number: 8822725
    Abstract: The invention is directed to a process for the preparation of an aqueous colloidal precious metal suspension, which process comprises reducing a precious metal salt in aqueous solution using a functionalized, water soluble quaternary ammonium salt in the absence of organic solvents, to form elementary nanoparticles.
    Type: Grant
    Filed: January 27, 2009
    Date of Patent: September 2, 2014
    Assignee: BASF Corporation
    Inventor: Peter Theodorus Witte
  • PROCESS FOR THE PREPARATION OF AN AQUEOUS COLLOIDAL PRECIOUS METAL SUSPENSION
    Publication number: 20110015451
    Abstract: The invention is directed to a process for the preparation of an aqueous colloidal precious metal suspension, which process comprises reducing a precious metal salt in aqueous solution using a functionalised, water soluble quaternary ammonium salt in the absence of organic solvents, to form elementary nanoparticles.
    Type: Application
    Filed: January 27, 2009
    Publication date: January 20, 2011
    Inventor: Peter Theodorus Witte