Patents by Inventor Gerard Hardeman

Gerard Hardeman 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).

  • Polyesters suitable for use in outdoor-durable coating systems
    Patent number: 5376460
    Abstract: The invention relates to polyesters for use in outdoor-durable coating systems such as, for instance, coil coating systems. The polyester according to the invention is based on at least 50 moles % 1,4-cyclohexanedicarboxylic acid and a hexahydrophathalic acid (anhydride) as acid components. Up to a maximum of 50 moles % the polyester may be based also on acid components such as, for instance, isophthalic acid, terephthalic acid, adipic acid, sebacic acid, decanedicarboxylic acid and/or dimerized fatty acids or acid anhydrides such as, for instance, phthalic anhydride and succinic anhydride.
    Type: Grant
    Filed: March 23, 1994
    Date of Patent: December 27, 1994
    Assignee: DSM N.V.
    Inventors: Gerard Hardeman, Wilhelmina Westerhof, Johannes W. Besamusca
  • Resin composition based on a polyester resin, an amino resin and an epoxy resin
    Patent number: 5368945
    Abstract: The invention relates to a coating composition based on a polyester resin, an amino resin and an epoxy resin.The polyester resin is a carboxyl-functional polyester with a molecular weight of between 12000 and 25000.
    Type: Grant
    Filed: January 12, 1993
    Date of Patent: November 29, 1994
    Assignee: Stamicarbon B.V.
    Inventors: Gerard Hardeman, Wilhelmina Westerhof, Anthonie J. Plak, Anneke Beens-Onstenk