Patents by Inventor Marcel Van Beylen

Marcel Van Beylen 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).

  • Solution of dilithium polymerization initiator
    Patent number: 6613858
    Abstract: A block copolymer having narrow molecular weight distribution and excellent symmetrical property or a telechelic polymer having, equally at both terminals thereof, a functional group can be produced by using a polymerization initiator solution which comprises a dilithium polymerization initiator having an average number of functional groups of 1.8 to 2.0/molecule and a solvent selected from aliphatic hydrocarbon compounds and alicyclic compounds and is free of a polar substance.
    Type: Grant
    Filed: January 10, 2002
    Date of Patent: September 2, 2003
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Masahiro Sasagawa, Jurgen Hofmans, Marcel Van Beylen