Patents by Inventor Douglas V. Hoffman

Douglas V. Hoffman 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-compression-cycle refrigeration system having a thermoelectric condenser
    Patent number: 5361587
    Abstract: A vapor-compression-cycle refrigeration system that utilizes Peltier cooling to condense high-pressure gaseous refrigerant. The Peltier condenser of the present invention includes a thermoelectric module which contacts at its cold side the gaseous refrigerant from the compressor and withdraws heat from the refrigerant to fins disposed on the hot side of the thermoelectric module.
    Type: Grant
    Filed: May 25, 1993
    Date of Patent: November 8, 1994
    Assignee: Paul Georgeades
    Inventor: Douglas V. Hoffman