Patents by Inventor Jacob van Dijk

Jacob van Dijk 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 the trimerization of unsaturated fatty acids
    Patent number: 4508652
    Abstract: A process is provided whereby high trimer content products are obtained by the polymerization of unsaturated fatty acids or lower alkyl esters thereof. The process entails heating the fatty acid/ester material at a temperature of at least 120.degree. C. in the presence of a sulphonic acid catalyst which is dissolved therein.
    Type: Grant
    Filed: June 23, 1982
    Date of Patent: April 2, 1985
    Assignee: National Distillers and Chemical Corporation
    Inventors: Jacob van Dijk, Johannes W. Renken, Jan G. Dekker, Johannes Helmond
  • Nickel catalyst on alumina support
    Patent number: 4490480
    Abstract: The invention provides new catalysts, useful for various hydrogenation reactions, which consist of 5 to 40% (w/w) of nickel upon a transition alumina, in particular gamma alumina support. These catalysts have an active nickel surface area of between 80 and 300, preferably 100-250 m.sup.2 /g of nickel and the nickel crystallites have an average diameter of 1 to 5, preferably 1.5 to 3 nanometers. The nickel crystallites are dispersed for at least 95% in the pores of the alumina.
    Type: Grant
    Filed: April 19, 1983
    Date of Patent: December 25, 1984
    Assignee: Internationale Octrooi Maatschappij "Octropa"B.V.
    Inventors: Cornelis M. Lok, Dirk Verzijl, Jacob van Dijk