Patents by Inventor Johan A. F. Kunst

Johan A. F. Kunst 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).

  • Process for the manufacture of homopolyamide-4,6 fibers
    Patent number: 6911257
    Abstract: The invention relates to a process for the manufacture of homopolyamide-4,6 fibers by melt spinning of homopolyamide-4,6, to fibers and multifilament yarns obtainable by the process and the use thereof for the reinforcement of rubber like in tire cords, V-belts etc. The invention further relates to a novel homopolyamide-4,6, a process for the manufacture thereof and the use of the new homopolyamide-4,6 for the manufacture of fibers, films and injection molded articles. The homopolyamide-4,6 fiber is manufactured by melt spinning of homopolyamide-4,6 having nascent morphology with a melting enthalpy of at least 140 J/g and a main melting temperature between 290 and 305° C.
    Type: Grant
    Filed: July 5, 2002
    Date of Patent: June 28, 2005
    Assignee: DSM IP Assets B.V.
    Inventors: Jippe Van Ruiten, Johan A. F. Kunst, Rudy Rulkens, Jan P Penning