Patents by Inventor Manfred Hutmann

Manfred Hutmann 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 incorporating feature substances into a paper web
    Patent number: 7175739
    Abstract: A method and apparatus for incorporating feature substances into a still moist but already sufficiently consolidated paper web provides for directing a feature substance suspension onto the surface of the paper web as a laminar jet with low jet pressure. A special pressure control circuit ensures that the jet pressure is always constant regardless of the number of parallel feature substance suspension jets directed onto the paper web. This makes it possible to incorporate a great variety of line codings in paper under the same process conditions without any visible changes in fiber structure occurring in the paper.
    Type: Grant
    Filed: June 23, 2005
    Date of Patent: February 13, 2007
    Assignee: Giesecke & Devrient GmbH
    Inventors: Thomas Attenberger, Gerhard Stenzel, Ralf Soltau, Manfred Hutmann
  • Method for incorporating feature substances into a paper web
    Publication number: 20050230071
    Abstract: A method and apparatus for incorporating feature substances into a still moist but already sufficiently consolidated paper web provides for directing a feature substance suspension onto the surface of the paper web as a laminar jet with low jet pressure. A special pressure control circuit ensures that the jet pressure is always constant regardless of the number of parallel feature substance suspension jets directed onto the paper web. This makes it possible to incorporate a great variety of line codings in paper under the same process conditions without any visible changes in fiber structure occurring in the paper.
    Type: Application
    Filed: June 23, 2005
    Publication date: October 20, 2005
    Inventors: Thomas Attenberger, Gerhard Stenzel, Ralf Soltau, Manfred Hutmann
  • Apparatus for incorporating feature substances into a paper web
    Patent number: 6936138
    Abstract: A method and apparatus for incorporating feature substances into a still moist but already sufficiently consolidated paper web provides for directing a feature substance suspension onto the surface of the paper web as a laminar jet with low jet pressure. A special pressure control circuit ensures that the jet pressure is always constant regardless of the number of parallel feature substance suspension jets directed onto the paper web. This makes it possible to incorporate a great variety of line codings in paper under the same process conditions without any visible changes in fiber structure occurring in the paper.
    Type: Grant
    Filed: April 26, 2002
    Date of Patent: August 30, 2005
    Assignee: Giesecke & Devrient GmbH
    Inventors: Thomas Attenberger, Gerhard Stenzel, Ralf Soltau, Manfred Hutmann
  • Method and apparatus for incorporating feature substances into a paper web
    Publication number: 20020166647
    Abstract: A method and apparatus for incorporating feature substances into a still moist but already sufficiently consolidated paper web provides for directing a feature substance suspension onto the surface of the paper web as a laminar jet with low jet pressure. A special pressure control circuit ensures that the jet pressure is always constant regardless of the number of parallel feature substance suspension jets directed onto the paper web. This makes it possible to incorporate a great variety of line codings in paper under the same process conditions without any visible changes in fiber structure occurring in the paper.
    Type: Application
    Filed: April 26, 2002
    Publication date: November 14, 2002
    Inventors: Thomas Attenberger, Gerhard Stenzel, Ralf Soltau, Manfred Hutmann