Patents by Inventor Michael Bracha

Michael Bracha 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 and device for liquefying hydrogen
    Patent number: 7040119
    Abstract: Described is a process and a device for liquefying hydrogen, whereby the hydrogen to be liquefied is liquefied against one or more refrigerant (mixture) circuits and/or by means of expansion and is guided over at least one ortho-para conversion catalyst. According to the invention, the ortho-para conversion catalyst or at least one of the ortho-para conversion catalysts (K) can be bypassed. Furthermore, during the liquefaction process an exchange (7, 8) can take place between the hydrogen fraction (3), flowing (2, 4) through the ortho-para conversion catalyst(s) (K), and the hydrogen fraction (3), not flowing through the ortho-para conversion catalyst(s) (K).
    Type: Grant
    Filed: February 8, 2002
    Date of Patent: May 9, 2006
    Assignee: Linde AG
    Inventors: Michael Bracha, Rolf Trill, Joachim Wolf
  • Method and device for liquefying hydrogen
    Publication number: 20040112083
    Abstract: Described is a process and a device for liquefying hydrogen, whereby the hydrogen to be liquefied is liquefied against one or more refrigerant (mixture) circuits and/or by means of expansion and is guided over at least one ortho-para conversion catalyst.
    Type: Application
    Filed: January 16, 2004
    Publication date: June 17, 2004
    Inventors: Michael Bracha, Rolf Trill, Joachim Wolf