Patents by Inventor John A. Tatem

John A. Tatem 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).

  • Industrial boilers
    Patent number: 4172431
    Abstract: An industrial boiler comprising a combustion chamber having a furnace therein, means for feeding products of combustion from the combustion chamber to a heat exchanger to heat water/stream therein, a pyrolytic retort, means to feed said products of combustion into heat transfer relationship with the retort to pyrolize material therein and means to feed products of pyrolysis from the retort.
    Type: Grant
    Filed: August 15, 1977
    Date of Patent: October 30, 1979
    Assignee: Parkinson Cowan GWB Limited
    Inventors: John A. Tatem, Reginald D. Northcote, Frederick G. McMullen