In 1969 Sinclair Oil was acquired by Atlantic Richfield (Arco).

On May 1, 1916, the highly successful Sinclair formed Sinclair Oil from the assets of eleven small petroleum companies.

Sinclair Oil discussed Standard oil's appropriation of Shukhov's ideas from his discovery of oil cracking.

He was appointed chief of exploration for all of Sinclair Oil in 1959.

From 1943 to 1957, Keith was a chemist at Sinclair Oil.

Originally a New York corporation, Sinclair Oil reincorporated in Wyoming in 1976.

He was an attorney for Sinclair Oil during the Teapot Dome scandal.

This was remedied with the purchase of Sinclair Oil in 1969.

Her father retired as the director of corporate sales for Sinclair Oil in New York.

Two years later, he bought remnants of Sinclair Oil, including its trademark.