Patents by Inventor Erich Hopf

Erich Hopf 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).

  • Palladium, gold and boron catalyst and process for the preparation of vinyl acetate
    Patent number: 6114571
    Abstract: A catalyst for preparing vinyl acetate in the gas phase from ethylene, acetic acid and oxygen or oxygen-containing gases with, at the same time, low-high boiler formation which catalyst comprises palladium and/or its compounds, gold and/or its compounds, moron or boron compounds and alkali metal compounds on a particular support.
    Type: Grant
    Filed: November 2, 1998
    Date of Patent: September 5, 2000
    Assignee: Celanese GmbH
    Inventors: Roland Abel, Ioan Nicolau, Erich Hopf, Rainer Kiemel
  • Chip card
    Patent number: 5917705
    Abstract: A chip card includes a plastic card. A plastic body is disposed in the plastic card and a semiconductor chip is surrounded by the plastic body. Contact strips are electrically connected with the semiconductor chip and are connected to the plastic card. The contact strips have a flexible region near and outside of the plastic body and are advantageously parts of a lead frame. An adhesive which joins the contact strips to the plastic card has at least three layers including a middle layer of flexible material.
    Type: Grant
    Filed: October 28, 1996
    Date of Patent: June 29, 1999
    Assignee: Siemens Aktiengesellschaft
    Inventors: Josef Kirschbauer, Erich Hopf, Gunther Gronninger, Jurgen Fischer, Gunter Didschies, Josef Mundigl, Michael Rogalli