Patents by Inventor Josef Steinhart

Josef Steinhart 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).

  • Carbon fiber electrode substrate for electrochemical cells
    Patent number: 7144476
    Abstract: This invention relates to electrode substrates for electrochemical cells, particularly low-temperature fuel cells, and processes for their production. Low-cost carbon fiber paper structures are used as precursor for preparation of an all-carbon product that has a high electric conductivity and porosity and can be processed in a continuous reel-to-reel mode. These paper materials are further impregnated and processed to adjust the final product properties. This all-carbon electrode substrate is not brittle thereby avoiding the main disadvantage of the prior art.
    Type: Grant
    Filed: April 3, 2003
    Date of Patent: December 5, 2006
    Assignee: SGL Carbon AG
    Inventors: Peter Wilde, Michael Maendle, Heiko Leinfelder, Josef Steinhart
  • Carbon fiber electrode substrate for electrochemical cells
    Publication number: 20030194557
    Abstract: This invention relates to electrode substrates for electrochemical cells, particularly low-temperature fuel cells, and processes for their production. Low-cost carbon fiber paper structures are used as precursor for preparation of an all-carbon product that has a high electric conductivity and porosity and can be processed in a continuous reel-to-reel mode. These paper materials are further impregnated and processed to adjust the final product properties. This all-carbon electrode substrate is not brittle thereby avoiding the main disadvantage of the prior art.
    Type: Application
    Filed: April 3, 2003
    Publication date: October 16, 2003
    Inventors: Peter Wilde, Michael Maendle, Heiko Leinfelder, Josef Steinhart