Patents by Inventor Michael Bergner

Michael Bergner 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).

  • Measurement of parameters in reactors having moving stirrers
    Patent number: 6149295
    Abstract: A process and apparatus for the measurement of parameters in reactors having moving stirrers which contain probes in the reactor interior, wherein at least two probes connected via a multiplexer to a sensor signal amplifier by connecting cables located in the moving stirrers are installed on the surface of the moving stirrers, and the measurement data obtained by the probes are passed via the connecting cables to a sensor signal amplifier and from thence are passed on to an electronic evaluation unit by non-contact, inductive signal transmission by means of a contactless sensor tap.
    Type: Grant
    Filed: September 21, 1999
    Date of Patent: November 21, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Dieter Volkmer, Peter Schey, Herbert Plotz, Franz Langhauser, Dirk Meckelnburg, Hans-Josef Klein, Michael Bergner, Jurgen Oelze
  • Preparation of bis(4-hydroxyphenyl)sulfone
    Patent number: 5059715
    Abstract: A process for the preparation of bis(4-hydroxyphenyl)sulfone by reacting phenol with sulfuric acid in the presence of a solvent at from 130.degree. to 220.degree. C. and in the presence or absence of a sulfonating assistant, wherein the bis(4-hydroxyphenyl)sulfone formed is selectively deposited on a nucleating surface during or after the reaction, and thus removed from the reaction medium.
    Type: Grant
    Filed: March 14, 1991
    Date of Patent: October 22, 1991
    Assignee: BASF Aktiengesellschaft
    Inventors: Michael Stumpp, Peter Neumann, Wolfgang Ruehenback, Michael Bergner