Patents by Inventor Johann Hohn

Johann Hohn 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).

  • Push-pull output stage for digital signals with regulated output levels
    Patent number: 6518819
    Abstract: The circuit has a push-pull end stage which acts as an amplifier stage for digital signals. The push-pull end stage has two n-channel MOS transistors which function as source followers and two p-channel MOS transistors which also function as source followers. The gate terminals of the respective n-channel MOS transistors and p-channel MOS transistors are each controlled by an operational amplifier through drivers. A voltage that determines the setpoint value of the high level of the output of the push-pull end stage is present at the non-inverting input of one operational amplifier and a voltage that determines the low level of the output of the push-pull end stage is present at the inverting input of the other operational amplifier.
    Type: Grant
    Filed: May 29, 2002
    Date of Patent: February 11, 2003
    Assignee: Infineon Technologies AG
    Inventors: Johann Höhn, Karl Schrödinger
  • Push-pull output stage for digital signals with regulated output levels
    Publication number: 20020158675
    Abstract: The circuit has a push-pull end stage which acts as an amplifier stage for digital signals. The push-pull end stage has two n-channel MOS transistors which function as source followers and two p-channel MOS transistors which also function as source followers. The gate terminals of the respective n-channel MOS transistors and p-channel MOS transistors are each controlled by an operational amplifier through drivers. A voltage that determines the setpoint value of the high level of the output of the push-pull end stage is present at the non-inverting input of one operational amplifier and a voltage that determines the low level of the output of the push-pull end stage is present at the inverting input of the other operational amplifier.
    Type: Application
    Filed: May 29, 2002
    Publication date: October 31, 2002
    Inventors: Johann Hohn, Karl Schrodinger
  • Hydrogenation of unsaturated polymers containing nitrile groups
    Patent number: 5034469
    Abstract: Hydrogenation products of olefinically unsaturated polymers having nitrile groups prepared in the presence of ruthenium catalysts in a solvent comprising a low-molecular ketone and a secondary or tertiary C.sub.3 -C.sub.6 -alcohol by hydrogenation, can be processed to vulcanizates with improved compression set values.
    Type: Grant
    Filed: June 18, 1990
    Date of Patent: July 23, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hartmuth Buding, Joachim Thormer, Wilfried Nolte, Johann Hohn, Paul-Christian Fiedler, Thomas Himmler
  • Process for the preparation of partially hydrogenated nitrile rubbers
    Patent number: 4791172
    Abstract: The invention relates to a process for the preparation of partially hydrogenated nitrile rubbers with defined residual double bond contents of between 2.0 and 5.0%, preferably 3.0 and 4.5%.
    Type: Grant
    Filed: October 2, 1987
    Date of Patent: December 13, 1988
    Assignee: Bayer Aktiengesellschaft
    Inventors: Johann Hohn, Franz-Josef Mersmann, Werner Obrecht, Zsolt Szentivanyi