Patents by Inventor Hans-Reiner Quaas

Hans-Reiner Quaas 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).

  • Vehicle heating
    Patent number: 5413279
    Abstract: A vehicle heating system characterized by a combined heating unit which contains a heater having a combustion gas/liquid heat exchanger and operating by burning liquid fuel, and a liquid/air heat exchanger in fluid flow communication therewith to supply heated air to warm the vehicle.
    Type: Grant
    Filed: July 2, 1993
    Date of Patent: May 9, 1995
    Assignee: J. Eberspacher
    Inventors: Hans-Reiner Quaas, Helmut Keinert