Patents by Inventor George E. Wengen

George E. Wengen 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).

  • Vapor control system
    Patent number: 3995440
    Abstract: A system for preventing substantial pollution of the atmosphere by benzene vapors displaced from a tank truck during loading of the truck with benzene. The benzene is loaded into the truck at its ambient temperature, and benzene vapors displaced from the truck are cooled to condense them to a liquid state. The system for cooling the benzene vapors is one in which natural gas at high pressure is expanded to a lower pressure, and the cooling effect which takes place during the expansion is utilized to cool and condense the benzene vapors.
    Type: Grant
    Filed: December 24, 1975
    Date of Patent: December 7, 1976
    Assignee: Sun Oil Company of Pennsylvania
    Inventor: George E. Wengen