Patents by Inventor Friedrich Haendeler

Friedrich Haendeler 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).

  • Gas-phase polymerization in a bell-shaped reactor
    Patent number: 6441108
    Abstract: The present invention relates to a process for the continuous discharge of pre-classified polymer particles, particularly rubber particles, from a gas phase polymerization reactor, comprising the steps of classifying the polymer in a classifier, discharging the particles with a sufficient size and conveying the undersized particles back into the gas phase polymerization reactor.
    Type: Grant
    Filed: April 6, 2000
    Date of Patent: August 27, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Friedrich Haendeler, Heiko Herold, Leslaw Mleczko, Claus Riehle, Franz-Josef Mersmann, Jürgen Schneider, Michael Dauben
  • Method and device for extracting rubber from gaseous phase polymerization
    Patent number: 6372865
    Abstract: The present invention relates to a process for the continuous discharge of pre-classified polymer particles, particularly rubber particles, from a gas phase polymerization reactor, comprising the steps of classifying the polymer in a classifier, discharging the particles with a sufficient size and conveying the undersized particles back into the gas phase polymerization reactor.
    Type: Grant
    Filed: April 4, 2000
    Date of Patent: April 16, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Friedrich Haendeler, Heiko Herold, Franz-Josef Mersmann, Klaus Schebesta, Jürgen Schneider, Norbert Schweigler