Patents by Inventor Leo Rottwinkel

Leo Rottwinkel 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).

  • Process and device for evaporating large quantities of low boiling liquefied gases
    Patent number: 4213501
    Abstract: Large amounts of low boiling liquefied gases are evaporated by heat transfer in a cylindrical combustion chamber without a convection component and a passage for the gas to be evaporated surrounds the combustion chamber so that the liquefied gas is exposed to a burner flame upon entry into the passage.
    Type: Grant
    Filed: October 25, 1977
    Date of Patent: July 22, 1980
    Assignee: Messer Griesheim GmbH
    Inventors: Ferdinand Pfeiffer, Leo Rottwinkel