Patents by Inventor Volker Etzbach

Volker Etzbach 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).

  • Cascaded refrigeration cycles for liquefying low-boiling gaseous mixtures
    Patent number: 3970441
    Abstract: Process for the at least partial liquefaction of a low-boiling gaseous mixture, which is under pressure, wherein the gaseous mixture is precooled in heat exchange with a vaporizing refrigerant, purified during the course of the precooling step, and, after the precooling step, is subjected to a preliminary separation, characterized in that the at least partial liquefaction of the gaseous fraction obtained during the preliminary separation is carried out in heat exchange with a vaporizing multicomponent gas, the partial liquefaction of which takes place by precooling, and the completed liquefaction and subcooling of which takes place in one stage against itself.
    Type: Grant
    Filed: January 13, 1975
    Date of Patent: July 20, 1976
    Assignee: Linde Aktiengesellschaft
    Inventors: Volker Etzbach, Wolfgang Forg, Peter Grimm