Patents by Inventor Koen Belmans

Koen Belmans 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).

  • Straw
    Patent number: 5361987
    Abstract: A straw is formed by a hollow upper part, a hollow lower part and an enlargement provided between the hollow upper and lower parts. The lower part extends into the enlargement to define a space therein between the hollow lower part and the enlargement. The hollow upper part opens into the enlargement above this space. With this construction, after the straw has been used to draw a beverage from a container, the space in the enlargement will remain filled with a portion of the beverage.
    Type: Grant
    Filed: September 8, 1993
    Date of Patent: November 8, 1994
    Inventors: Koen Matheussen, Peter Hendrickx, Koen Belmans, Luc de Bal