Patents by Inventor Leonard E. H. Gerards

Leonard E. H. Gerards 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).

  • Patent number: 5034463
    Abstract: A process for preparing an electrically conductive polymer composition which comprises preparing a blend of a solution of an intrinsically conductive polymer and a thermosetting, thermoplastic or elastomeric polymer and removing the solvent, the intrinsically conductive polymer being employed in a weight ratio to the second polymer of from about 0.005:1 to 3:1, the solution having a solids content of from about 2 to 75 weight percent, and the intrinsically conductive polymer being an electrically conductive, stacked macrocyclic metal complex polymer based upon porphyrin or a derivative thereof which comprises an organic bridging ligand containing conjugated pi-electrons allowing delocalization along the polymer chain and in which the metal atom is Fe, R, Rh, Co, Mn or Cr.
    Type: Grant
    Filed: October 15, 1990
    Date of Patent: July 23, 1991
    Assignee: Shell Oil Corporation
    Inventors: Josephina C. M. Brokken-Zijp, Leonard E. H. Gerards, Michael Hanack
  • Patent number: 5030712
    Abstract: An improved process for the production of linear alternating polymers of carbon monoxide and at least one ethylenically unsaturated hydrocarbon comprises contacting the carbon monoxide and hydrocarbon under polymerization conditions in the presence of a catalyst composition formed from a palladium compound, an anion of a strong non-hydrohalogenic acid and an aryl phosphine sulfide having at least 2 phosphorus atoms.
    Type: Grant
    Filed: November 7, 1989
    Date of Patent: July 9, 1991
    Assignee: Shell Oil Company
    Inventors: Johannes A. van Doorn, Eit Drent, Leonard E. H. Gerards