Patents by Inventor Ellen Giebeler

Ellen Giebeler 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).

  • Rubber mixes containing polyether/diolefin rubbers and use thereof in particular for the production of tires with low rolling resistance
    Patent number: 6518369
    Abstract: The present invention relates to filled rubber mixes made from polyether/diolefin rubbers. The rubber mixes according to the present invention are suitable for the production of highly reinforced, abrasion-resistant moldings, in particular for the production of tires which exhibit low rolling resistance and elevated wet skid resistance.
    Type: Grant
    Filed: November 14, 2001
    Date of Patent: February 11, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Thomas Scholl, Werner Obrecht, Wilfried Braubach, Ellen Giebeler, Michael Grün, Axel Müller, Mabel Graf
  • Rubber mixes containing polyether/diolefin rubbers and use thereof in particular for the production of tires with low rolling resistance
    Publication number: 20020132926
    Abstract: The present invention relates to filled rubber mixes made from polyether/diolefin rubbers. The rubber mixes according to the present invention are suitable for the production of highly reinforced, abrasion-resistant moldings, in particular for the production of tires which exhibit low rolling resistance and elevated wet skid resistance.
    Type: Application
    Filed: November 14, 2001
    Publication date: September 19, 2002
    Inventors: Thomas Scholl, Ulrike, Philipp, Christine, Johannes Scholl, Werner Obrecht, Wilfried Braubach, Ellen Giebeler, Michael Grun, Axel Muller, Mabel Graf
  • Method for the production of a copolymer based on vinyl aromatic compounds and conjugated dienes
    Patent number: 6417285
    Abstract: The present invention provides a method for the production of a copolymer based on vinyl aromatic compounds and conjugated dienes, in which after polymerization, the copolymers are treated with multi-functional sulfur halides in the presence of a catalyst at temperatures in the range from 20 to 130° C. The copolymers produced according to the present invention demonstrate clearly improved processing characteristics as a result of selective masticating effect and good mechanical properties.
    Type: Grant
    Filed: January 18, 2001
    Date of Patent: July 9, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ellen Giebeler, Heinz-Dieter Brandt, Rüdiger Engehausen, Günter Marwede
  • Method for the copolymerization of conjugated diolefins (dienes) and vinyl-aromatic monomers with rare-earth catalysts and use of the copolymers in rubber mixtures for tire applications
    Patent number: 6399726
    Abstract: The present invention concerns a method for the copolymerization of conjugated diolefins and vinyl-aromatic monomers in the presence of rare-earth catalysts and the use of the copolymers in rubber mixtures for tire applications.
    Type: Grant
    Filed: August 15, 2000
    Date of Patent: June 4, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Heike Windisch, Jürgen Trimbach, Peter Schertl, Ellen Giebeler, Rüdiger Engehausen
  • Process for producing di-or trifunctional initiator systems based on lithium and their use
    Publication number: 20020022704
    Abstract: The present invention relates to an improved process for producing di- or trifunctional initiator systems based on lithium and their use for the polymerization of conjugated dienes, in particular for the copolymerization of conjugated dienes with aromatic vinyl compounds.
    Type: Application
    Filed: July 24, 2001
    Publication date: February 21, 2002
    Inventors: Ellen Giebeler, Pierre Lutz, Joel Hoffstetter
  • Method for the production of a copolymer based on vinyl aromatic compounds and conjugated dienes
    Publication number: 20010014720
    Abstract: The present invention provides a method for the production of a copolymer based on vinyl aromatic compounds and conjugated dienes, in which after polymerization, the copolymers are treated with multi-functional sulfur halides in the presence of a catalyst at temperatures in the range from 20 to 130° C.
    Type: Application
    Filed: January 18, 2001
    Publication date: August 16, 2001
    Inventors: Ellen Giebeler, Heinz-Dieter Brandt, Rudiger Engehausen, Gunter Marwede