Patents by Inventor Klaus-Dieter Nehren

Klaus-Dieter Nehren 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).

  • Silicone composition curing at room temperature and the use thereof
    Patent number: 6218461
    Abstract: A silicone composition curing at room temperature by condensation, which is suitable especially as a dental molding composition. The silicone composition consists of the a) base paste containing a filler and polyorganosiloxane having hydroxy groups, b) and the activator component containing in addition to crosslinking agent and catalyst also a polyaddition product with alkoxysilyl groups in the molecule. The base paste and activator component can be mixed uniformly together and can be offered with special advantage in double cartridges.
    Type: Grant
    Filed: February 23, 1999
    Date of Patent: April 17, 2001
    Assignee: Heraeus Kulzer GmbH & Co. KG
    Inventors: Peter Schwabe, Michael Freckmann, Klaus-Dieter Nehren