Patents by Inventor Ben Z. Freedman

Ben Z. Freedman 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).

  • Use of ejectors for high temperature power generation
    Patent number: 4843823
    Abstract: Heat engines having improved efficiencies are provided. In accordance with preferred embodiments, topping cycle engines are provided employing ejectors. Use of ejectors in accordance with the invention permits higher high side temperatures while permitting work extraction devices to be operated at standard temperatures. A preferred sodium-helium system is described in detail.
    Type: Grant
    Filed: June 9, 1988
    Date of Patent: July 4, 1989
    Assignee: Trustees of the University of Pennsylvania
    Inventor: Ben Z. Freedman