Lewis C. KARRICK
Low Temperature Carbonization of Coal ( LTC ) US Patents
USP # 1,832,219
Process & Apparatus for Superheating Steam
(Nov. 17, 1931)
USP # 1,901,170
Gasification of Carbonaceous Material
(14 March 1933)
USP # 1,913,395
Underground Gasification of Carbonaceous Material Bearing Substances
(June 13, 1933)
USP # 1,919,636
System of Mining Oil Shales
(July 25, 1933)
USP # 1,923,213
Process & Apparatus for Carbonizing Coal
(Aug. 22, 1933)
USP # 1,938,596
Retort
(Dec. 12, 1933)
USP # 1,942,650
Apparatus for Coking Bituminous Liquids & the Like
(Jan. 9, 1934)
USP # 1,950,558
Process for the Production of Gas, Oil, & Other Products
(March 13, 1934)
USP # 1,958,918
Process of Destructively Distilling Solid Carbonaceous Material
(May 15, 1934)
USP # 2,011,054
Process of Destructive Distillation of Carbonaceous Materia
l(Aug. 13, 1935)
USP # 2,165,143
Coal Treating Process & Apparatus
(July 4, 1939)
USP # 2,268,989
Process for Improving Fuel
(Jan. 6, 1942)
USP # 2,283,556
Valve
(May 19, 1942)
