Patents by Inventor Jurgen Wassen

Jurgen Wassen 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).

  • Nitrile rubber mixtures with a low tendency towards mold contamination
    Patent number: 6929769
    Abstract: The present invention relates to a process for reducing mold contamination in an injection molding process by using a mixture of nitrile rubbers, in the range of from 0.1-0.5 wt. % of fatty acids and optionally further additives.
    Type: Grant
    Filed: January 16, 2003
    Date of Patent: August 16, 2005
    Assignee: Bayer Aktiengesellschaft
    Inventors: Roland Parg, Hans Magg, Luigi Marinelli, Jürgen Wassen, Peter Wendling, Hans-Rafael Winkelbach, Christiane Oppenheimer-Stix, Hans Christian Strauch, Jean-Pierre Lambert
  • Nitrile rubber mixtures with a low tendency towards mold contamination
    Publication number: 20030181604
    Abstract: The present invention relates to a process for reducing mold contamination in an injection molding process by using a mixture of nitrile rubbers, in the range of from 0.1-0.5 wt. % of fatty acids and optionally further additives.
    Type: Application
    Filed: January 16, 2003
    Publication date: September 25, 2003
    Inventors: Roland Parg, Hans Magg, Luigi Marinelli, Jurgen Wassen, Peter Wendling, Hans-Rafael Winkelbach, Christiane Oppenheimer-Stix, Hans Christian Strauch, Jean-Pierre Lambert
  • Cross-linkable mixtures based on hydrogenated nitrile rubber and ethylene/acrylonitrile copolymers
    Patent number: 4963621
    Abstract: Rubber mixtures of hydrogenated nitrile rubber and ethylene/acrylonitrile copolymers, which contain copolymerized units of compounds with at least two (meth-)acryloyl groups, are easy to process and give vulcanized materials of high solvent resistance without any deterioration in the mechanical properties.
    Type: Grant
    Filed: February 5, 1990
    Date of Patent: October 16, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Zsolt Szentivanyi, Werner Obrecht, Jurgen Wassen
  • Process for the preparation of N-(cyclohexylthio)-phthalimide
    Patent number: 4377700
    Abstract: A process for the preparation of N-(cyclohexylthio)-phthalimide by the reaction of phthalimide with cyclohexylsulphenylchloride in the presence of a base, characterized in that an alkali or alkaline earth metal hydroxide is used as the base.
    Type: Grant
    Filed: September 8, 1981
    Date of Patent: March 22, 1983
    Assignee: Bayer Aktiengesellschaft
    Inventors: Jurgen Wassen, Heinrich Konigshofen