Career
He patented several coal and oil shale related inventions, and he also refined and perfected a low-temperature carbonization and pyrolysis process for processing coal and other carbonaceous materials, known as the Karrick process. Lewis Carrick worked as a consulting engineer for the United States synthetic fuels studies in Utah and Ohio. In 1920s, he improved the low-temperature carbonization and pyrolysis process for processing coal and other carbonaceous materials, which is known as Karrick process.
He was also actively involved in the early development of the NTU oil shale retort.
In 1930–1938, he worked as a supervisor of the coal products research at the University of Utah. In 1943, Karrick was employed by the United States Geological Survey to work on Alaska and Rockey Mountain Coal Survey.
In 1950, he was transferred to the United States Bureau of Mines"s Pittsburgh station. United States. Patent 1,835,878 United States. Patent 1,894,691 United States. Patent 1,899,154
United States. Patent 1,901,169 United States. Patent 1,901,170 United States. Patent 1,906,755
United States. Patent 1,913,395 United States. Patent 1,919,636 United States. Patent 1,923,213
United States. Patent 1,938,596 United States. Patent 1,942,650 United States. Patent 1,945,530
United States. Patent 1,950,558 United States. Patent 1,958,918 United States. Patent 2,011,054
United States. Patent 2,268,989 United States. Patent 2,283,556.
