Patents by Inventor Gerard P. De Vries

Gerard P. De Vries 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 preparing polymers and mouling compounds based thereon
    Patent number: 5430073
    Abstract: The invention relates to a process for preparing a polymer in which in situ polymerization of monomers takes place in the presence of a catalyst, in which the monomers are obtained by in situ activation of precursor monomers.According to the invention a premature polymerization is avoided, but polymerization only starts at the desired moment.
    Type: Grant
    Filed: July 15, 1993
    Date of Patent: July 4, 1995
    Assignee: DSM, N.V.
    Inventors: Hans K. Van Dijk, Ronald M. A. M. Schellekens, Markus J. H. Bulters, Olav M. Aagaard, Gerard P. De Vries, Matthias J. G. Brouns