I want to know the answer to the following question:
What researcher patented a hot water oil process to separate bitumen?
All the background I'm provided with is that "During the 1920s Dr. Karl A. Clark of the Alberta Research Council patented a hot water oil separation process and entrepreneur Robert C. Fitzsimmons built the Bitumount oil separation plant, which between 1925 and 1958 produced up to 300 barrels (50 m3) per day of bitumen using Dr. Clark's method.". Is that enough to answer the question?
Answer: yes