Patents by Inventor Frank Elefsen

Frank Elefsen 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 and a refrigerating apparatus for making a slush ice
    Publication number: 20010041210
    Abstract: Slush ice is produced in a liquid by adding a freezing point-depressing agent and particles to the liquid to form a liquid mix, and then cooling the liquid mix by heat exchange with a refrigeration circuit, ice crystals being formed in the liquid mix at nucleation sites provided by the particles. A slush ice of nonfrozen liquid and ice particles is produced and ice formation on the conduit in which the liquid mix flows is avoided.
    Type: Application
    Filed: April 19, 2001
    Publication date: November 15, 2001
    Inventors: Michael Kauffeld, Kaj Rosenstedt, Lars Bay Moller, Frank Elefsen