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Charles R Stahl, Michael A Gibson, Christian W Knudsen: Thermally-enhanced oil recovery method and apparatus. Carbotek, Neal J Mosely, September 22, 1987: US04694907 (301 worldwide citation)

A thermally-enhanced oil recovery method and apparatus for exploiting deep well reservoirs utilizes electric downhole steam generators to provide supplemental heat to generate high quality steam from hot pressurized water which is heated at the surface. A downhole electric heater placed within a wel ...


2
Charles R Stahl: Closed cycle gas turbine for gaseous production. General Electric Company, John F Ahern, Robert C Kain Jr, March 6, 1984: US04434613 (150 worldwide citation)

A gas turbine is employed in a combined cycle system to produce one or more chemically useful products. Selected exhaust gases are fed back into the gas turbine compressor so as to establish a stable mixture of working fluid constituents for the gas turbine. The gas turbine is preferably configured ...


3
Charles R Stahl: Closed-cycle gas turbine chemical processor. General Electric Co, J C Squillaro, July 16, 1985: US04528811 (109 worldwide citation)

A closed-cycle gas turbine chemical processor separates the functions of combustion air and dilution fluid in a gas turbine combustor. The output of the turbine stage of the gas turbine is cooled and recirculated to its compressor from where a proportion is fed to a dilution portion of its combustor ...


4
Charles R Stahl, Archie H Perugi: Gas turbine power plant. General Electric Company, J C Squillaro, January 8, 1985: US04492085 (49 worldwide citation)

The present invention relates to a gas turbine power plant wherein the gas turbine is driven by gases and steam heated indirectly through a heat exchanger by the burning of corrosive fuels. One of the main improvements in the present invention is to utilize a state-of-the-art gas turbine in the powe ...


5
Charles R Stahl, Michael A Gibson, Christian W Knudsen: Double wall vacuum tubing and method of manufacture. Carbotek, Neal J Mosely, October 31, 1989: US04876780 (7 worldwide citation)

An evacuated double wall tubing is shown together with a method for the manufacture of such tubing which includes providing a first pipe of predetermined larger diameter and a second pipe having an O.D. substantially smaller than the I.D. of the first pipe. An evacuation opening is then in the first ...


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