Patents by Inventor Klaus Unger

Klaus Unger 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 production of silicon dioxide ion exchangers
    Patent number: 3936388
    Abstract: An improved process for the production of silicon dioxide ion exchangers, which comprises the step of reacting silicon dioxide with benzyltrichlorosilane, in the absence of solvent and air, followed by hydrolysis, to produce a benzylated silicon dioxide whose benzyl groups can then be substituted with ion exchange reactive groups in a conventional manner.
    Type: Grant
    Filed: May 25, 1973
    Date of Patent: February 3, 1976
    Assignee: Merck Patent Gesellschaft mit beschrankter Haftung
    Inventors: Klaus Unger, Karlheinz Berg