Patents by Inventor Ulf Hofmann

Ulf Hofmann 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 the production of membrane/electrode units
    Patent number: 8177863
    Abstract: A method for production of a membrane/electrode unit for a fuel cell is disclosed. The conducting polymer membrane is compressed with two electrodes until a given compression is achieved. The method permits an increase in resting voltage of the membrane/electrode unit in use, the amount of damage during production is reduced, and a constant thickness within a production run is achieved.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: May 15, 2012
    Assignee: BASF Fuel Cell GmbH
    Inventors: Christoph Padberg, Jürgen Sinschek, Torsten Raap, Ulf Hofmann
  • Method for the production of membrane/electrode units
    Patent number: 8066784
    Abstract: The invention relates to a method for production of a membrane/electrode unit, whereby a conducting polymer membrane is compressed with two electrodes until a given compression is achieved. Said method permits an increase in resting voltage of the membrane/electrode unit in use, the amount of damage during production is reduced and a constant thickness within a production run is achieved.
    Type: Grant
    Filed: July 14, 2005
    Date of Patent: November 29, 2011
    Assignee: BASF Fuel Cell GmbH
    Inventors: Christoph Padberg, Jürgen Sinschek, Torsten Raap, Ulf Hofmann
  • METHOD FOR THE PRODUCTION OF MEMBRANE/ELECTRODE UNITS
    Publication number: 20110265669
    Abstract: A method for production of a membrane/electrode unit for a fuel cell is disclosed. The conducting polymer membrane is compressed with two electrodes until a given compression is achieved. The method permits an increase in resting voltage of the membrane/electrode unit in use, the amount of damage during production is reduced, and a constant thickness within a production run is achieved.
    Type: Application
    Filed: June 23, 2011
    Publication date: November 3, 2011
    Inventors: Christoph Padberg, Jürgen Sinschek, Torsten Raap, Ulf Hofmann