Patents by Inventor Dirk C. H. van der Ploeg

Dirk C. H. van der Ploeg 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 making a plastic cheese mold
    Patent number: 4472339
    Abstract: A cheese mold of polyolefin material having a non-woven inner layer of polyolefin fibers which is heat welded to the mold surface is disclosed. A method for manufacturing the mold is also provided. A non-woven layer of fibers is provided and a liquid mass of plastic is heat sealed thereto by extrusion or injection molding.
    Type: Grant
    Filed: September 27, 1982
    Date of Patent: September 18, 1984
    Assignee: B.V. Hollandse Plastic Industrie Rotterdam
    Inventors: Dirk C. H. van der Ploeg, Marinus H. Vellekoop, Hendrik Palte
  • Plastic cheese mold
    Patent number: 4437787
    Abstract: A plastic cheese mold comprising on its inner wall a non woven of thermoplastic fibers heatsealed to the walls of the mold, said cheese mold comprising two shell halves forming an elongate cheese mold of a substantial equal cross-section over the length of the mold.The shell halves engage movable clamping sledges and the bottom of the shell halves may be provided with a pivot.The mold also comprises an outer bottom recess for coupling a follower.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: March 20, 1984
    Assignee: Albany International Plastic B.V.
    Inventors: Dirk C. H. van der Ploeg, Hendrikus M. Tameris