Patents by Inventor Andreas Ullmann

Andreas Ullmann 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).

  • Organic field effect transistor with off-set threshold voltage and the use thereof
    Publication number: 20050211972
    Abstract: The invention relates to an organic field effect transistor with off-set threshold voltage. Said OFET has an intermediate layer that defines a space charge region between the insulator and the semiconductor.
    Type: Application
    Filed: September 12, 2002
    Publication date: September 29, 2005
    Applicant: Siemens Aktiengesellschaft
    Inventors: Walter Fix, Andreas Ullmann
  • Insulator for an organic electronic component
    Publication number: 20050048803
    Abstract: The invention concerns an insulator for an organic electronic component, in particular, for an organic field-effect transistor (OFET) or for an organic capacitor. The insulating material is characterized in that it includes an almost constant relative dielectric constant, even in case of frequency variation in wide ranges, for example, between 1 Hz and 100 kHz.
    Type: Application
    Filed: September 5, 2002
    Publication date: March 3, 2005
    Inventors: Erwann Guillet, Peter Bonzani, Walter Fix, Henning Rost, Andreas Ullmann
  • Method for producing conductive structures by means of printing technique, and active components produced therefrom for integrated circuits
    Publication number: 20040209191
    Abstract: The invention relates to a method for producing conductive structures. Said method is characterized in that strip conductors or electrodes are directly or indirectly produced in a conductive layer by means of a printing technique. The inventive method is especially suitable for producing electrodes and strip conductors in simple, fast and cost-effective ways.
    Type: Application
    Filed: June 1, 2004
    Publication date: October 21, 2004
    Inventors: Adolf Bernds, Wolfgang Clemens, Walter Fix, Alexander Friedrich Knobloch, Andreas Ullmann