in 1904, leading to a growing outcry for the government to take action against the company.
As the agreement with IG Farben gave to the German company a veto right of licensing chemical industry patents in the United States, including patent for butyl rubber, Jersey Standard was accused of treason by senator Harry S. In 1932, Jersey Standard acquired foreign assets of the Pan American Petroleum and Transport Company.
In 1937, its assets in Bolivia were nationalized, followed by nationalization of its assets in Mexico in 1938.
Humble Oil became a wholly owned subsidiary of Jersey Standard and was reorganized into the United States marketing division of Jersey Standard in 1959.
In 1967, Humble Oil purchased all remaining Signal stations from Standard Oil Company of California (Chevron) In 1969, Humble Oil opened a new refinery in Benicia, California. For managing the Midwest and Eastern coal assets in the United States, the Monterey Coal Company was established in 1969.
Exxon Mobil has been criticized for its slow response to cleanup efforts after the 1989 Exxon Valdez oil spill in Alaska, widely considered to be one of the world's worst oil spills in terms of damage to the environment.