Patents by Inventor Erwin Rochau

Erwin Rochau 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).

  • Method for purifying silicone oil
    Patent number: 4661612
    Abstract: A method for purifying silicone oil used particularly as a cooling and/or insulation agent in electrical high voltage devices. The silicone oil is purified by the addition of drying agents, e.g. molecular sieves, and adsorption agents, e.g. activated carbon, and by mechanically moving the mixture. After subsequent sedimentation, filtration and degasification, purified silicone oil is obtained which can again be used as a coolant and/or insulating agent.
    Type: Grant
    Filed: November 13, 1985
    Date of Patent: April 28, 1987
    Assignee: Licentia Patent-Verwaltungs-GmbH
    Inventors: Ulf George, Erwin Rochau, Hans Merk, Joachim Behnke