Patents by Inventor Cornelis van Hal

Cornelis van Hal 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).

  • Filterpan ring for brewing prepackaged dry beverages
    Patent number: 5178058
    Abstract: An apparatus for preparing a number of consumption units of a beverage, such as coffee or tea, comprising a beverage making apparatus with a hot water outflow passage, a filterpan and a disposable filter cartridge which fits into the filterpan, the filterpan and filter cartridge are adapted to form a watertight seal, and a support surface being provided for a vessel for receiving the extract. The apparatus has a filterpan ring which prevents the hot water form reaching an internal bottom peripheral surface of the filterpan before the heated water contacts a central portion of an upper surface of the cartridge.
    Type: Grant
    Filed: February 18, 1992
    Date of Patent: January 12, 1993
    Assignee: Sara Lee/DE N.V.
    Inventors: Gerardus J. van Dort, Cornelis van Hal, Emil H. Rusche, Christoffel A. J. Vroonland