Patents by Inventor Martin Dinant Northolt

Martin Dinant Northolt 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: 6410096
    Abstract: A method for producing a biologically degradable polyhydroxyalkanoate coating in the form of an elastomeric film, wherein an aqueous dispersion of polyhydroxyalkanoate or a mixture of polyhydroxyalkanoate is prepared and the dispersion is applied to the surface to be coated, after which water is made or allowed to evaporate to obtain a polyhydroxyalkanoate film, the film formation taking place at a temperature lower than the melting point of the polyhydroxyalkanoate, wherein the polyhydroxyalkanoate is a Pseudomonas polyhydroxyalkanoate other than a polymer or copolymer of &bgr;-hydroxyvalerate or &bgr;-hydroxybutyrate, without requiring additional steps to render the film elastomeric.
    Type: Grant
    Filed: July 6, 1999
    Date of Patent: June 25, 2002
    Assignee: Stichting Onderzoek en Ontwikkeling Noord-Nederland (SOONN)
    Inventors: Gerrit Eggink, Martin Dinant Northolt
  • Patent number: 5958480
    Abstract: A method for producing a biologically degradable polyhydroxyalkanoate coating in the form of an elastomeric film, wherein an aqueous dispersion of polyhydroxyalkanoate or a mixture of polyhydroxyalkanoates is prepared and the dispersion is applied to the surface to be coated, after which water is made or allowed to evaporate to obtain a polyhydroxyalkanoate film, the film formation taking place at a temperature lower than the melting point of the polyhydroxyalkanoate, such a temperature even for example being more than 35.degree. C. below the melting point and in which the polyhydroxyalkanoate used is a polymer which is made up of saturated or unsaturated 3-hydroxy fatty acids having a carbon-chain length of 6-14 and/or is a Pseudomonas polyhydroxyalkanoate other than a polymer or copolymer of .beta.-hydroxyvalerate or .beta.-hydroxybutyrate, without requiring additional steps to render the film elastomeric.
    Type: Grant
    Filed: January 23, 1997
    Date of Patent: September 28, 1999
    Assignee: Stichting Onderzoek en Ontwikkeling Noord-Nederland (SOONN)
    Inventors: Gerrit Eggink, Martin Dinant Northolt