Patents by Inventor Michael G. Willemsen

Michael G. Willemsen 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).

  • Collapsible container for fluids
    Patent number: 5979710
    Abstract: The invention relates to a container for a small quantity, for instance a portion, of fluid material such as liquid, gas, paste or gel, wherein the container is adapted to reduce its volume through the exertion of external forces and the container is provided with a closure, wherein the container comprises two walls (7, 8) which are each rigid at least on their edge and which are connected by a flexible wall (9, 10). The container is preferably provided with a closure which is breakable by internal pressure on the container.
    Type: Grant
    Filed: February 3, 1999
    Date of Patent: November 9, 1999
    Inventors: Michael G. Willemsen, Louis R. H. A. Willemsen