Patents by Inventor Christoffel Antonius Johannes Vroonland

Christoffel Antonius Johannes Vroonland 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).

  • Emulsifier for preparing frothed milk and hot milk
    Patent number: 5884552
    Abstract: An emulsifier suitable for emulsifying steam, air and milk for preparing frothed milk for cappuccino and similar beverages. The emulsifier comprises a first steam inlet, an air inlet, a first milk inlet, a first suction chamber and a mixing chamber. The first steam inlet, the air inlet and the first milk inlet open into the first suction chamber. The first suction chamber is in fluid communication with the mixing chamber. The emulsifier further comprises a second steam inlet, a second milk inlet and a second suction chamber. The second steam inlet and the second milk inlet open into the second suction chamber. The second suction chamber is in fluid communication with the mixing chamber for preparing hot, non-frothed milk under supply of steam to the second steam inlet.
    Type: Grant
    Filed: April 22, 1997
    Date of Patent: March 23, 1999
    Assignee: Sara Lee/DE N.V.
    Inventors: Andre Lussi, Christoffel Antonius Johannes Vroonland