Patents by Inventor Joachim R. Schaefer

Joachim R. Schaefer 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).

  • Patent number: 6823584
    Abstract: A process for manufacturing a membrane electrode assembly for an electrochemical cell comprises: feeding a sheet of ion exchange membrane material through a double belt press; feeding at least one electrode substrate through the double belt press; and applying heat and pressure to bond a portion of the membrane material and the electrode substrate within a process zone of the double belt press. An apparatus for manufacturing membrane electrode assemblies for an electrochemical cell comprises a double belt press. The present process can further comprise cutting a membrane electrode assembly, such as by longitudinal slitting to obtain strips of the desired width and/or cross-cutting of the strips to obtain a membrane electrode assembly of the desired length.
    Type: Grant
    Filed: April 30, 2002
    Date of Patent: November 30, 2004
    Assignee: Ballard Power Systems Inc.
    Inventors: Joachim R. Schaefer, Martin Schroer
  • Publication number: 20020192548
    Abstract: A process for manufacturing a membrane electrode assembly for an electrochemical cell comprises: feeding a sheet of ion exchange membrane material through a double belt press; feeding at least one electrode substrate through the double belt press; and applying heat and pressure to bond a portion of the membrane material and the electrode substrate within a process zone of the double belt press. An apparatus for manufacturing membrane electrode assemblies for an electrochemical cell comprises a double belt press. The present process can further comprise cutting a membrane electrode assembly, such as by longitudinal slitting to obtain strips of the desired width and/or cross-cutting of the strips to obtain a membrane electrode assembly of the desired length.
    Type: Application
    Filed: April 30, 2002
    Publication date: December 19, 2002
    Inventors: Joachim R. Schaefer, Martin Schroer