Patents by Inventor Hubert Malik

Hubert Malik 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 producing expandable graphite intercalation compounds using phosphoric acids, and graphite foil
    Patent number: 6645456
    Abstract: A method for producing expandable graphite intercalation compounds uses a thermal polyphosphoric acid which is added to an intercalation agent or to graphite. Preferably, the thermal polyphosphoric acid is used in a mixture with red, fuming nitric acid. Products produced from the graphite intercalation compounds through the expanded graphite stage, such as graphite foils, graphite laminates or graphite seals, have a comparatively high fluid tightness, are relatively resistant to oxidative attack, and can have comparatively high strengths. A further advantage is a good handling ability of the thermal polyphosphoric acids. A graphite foil is also provided.
    Type: Grant
    Filed: January 25, 2001
    Date of Patent: November 11, 2003
    Assignee: SGL Technik GmbH
    Inventors: Oswin Öttinger, Hubert Malik
  • Method for producing expandable graphite intercalation compounds using phosphoric acids, and graphite foil
    Publication number: 20010018040
    Abstract: A method for producing expandable graphite intercalation compounds uses a thermal polyphosphoric acid which is added to an intercalation agent or to graphite. Preferably, the thermal polyphosphoric acid is used in a mixture with red, fuming nitric acid. Products produced from the graphite intercalation compounds through the expanded graphite stage, such as graphite foils, graphite laminates or graphite seals, have a comparatively high fluid tightness, are relatively resistant to oxidative attack, and can have comparatively high strengths. A further advantage is a good handling ability of the thermal polyphosphoric acids. A graphite foil is also provided.
    Type: Application
    Filed: January 25, 2001
    Publication date: August 30, 2001
    Inventors: Oswin Ottinger, Hubert Malik