Patents by Inventor Dirk P. De Bruijn

Dirk P. De Bruijn 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).

  • Polymer compositions
    Patent number: 5319009
    Abstract: Thermosetting, thermoplastic or elastomeric polymer compositions having and exhibiting conductive properties comprising from about 0.00005 to 20% by weight of a crystalline compound selected from substituted or unsubstituted aquocyanophthalocyaninatocobalt cyanide and aquocyanophthalocyaninatoiron(III).
    Type: Grant
    Filed: May 27, 1993
    Date of Patent: June 7, 1994
    Assignee: Shell Oil Company
    Inventors: Josephina C. M. Brokken-Zijp, Joannes B. Van Mechelen, Klass P. Datema, Cornelis A. Emeis, Arris H. Kramer, Dirk P. De Bruijn, Arend-Jan Meruma