Patents by Inventor Jan B. Elzerman

Jan B. Elzerman 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).

  • Method of constructing an artificial island and island constructed by the same
    Patent number: 4397587
    Abstract: An artificial island is constructed by depositing material such as sand, y or the like on the building site on the bottom and by providing inhibiting means formed by branched, relatively spaced elements positioned on the building site, to reduce the rate of effluence of the material such as sand, clay or the like along the sea bottom.
    Type: Grant
    Filed: October 6, 1980
    Date of Patent: August 9, 1983
    Assignees: Ballast-Nedam Groep N.V., Amsterdamse Ballast Bagger en Grond (Amsterdam Ballast Dredging) B.V.
    Inventors: Jan Op den Velde, Jan B. Elzerman, Klaas Oterdoom