American Ethane Company website nor by its publications although these foreigners have significant interests in American Ethane. Finally, Konstantin Nikolaev is a partner and close associate of Vladimir Putin's inner circle through Igor Levitin, Alexey Mordashov, Arkady Rotenberg, and Gennady Timchenko. American Ethane Company American Ethane Company, LLC (AEC) is the largest producer of ethane in the United States. It is a Houston, Texas, based American petroleum company established in January 2014 with offices in New Orleans. It is privately held with large investments from Russian oligarchs who are close to Vladimir Putin's inner circle. As of July 2018, Konstantin Nikolaev, Mikhail Yuriev,
Rotenberg (Stuttgart) Rotenberg (Stuttgart) Rotenberg is a village which is a part of the Untertürkheim district of the City of Stuttgart, Germany. The area overlooks Untertürkheim and the Neckar valley and lies on the north and east slopes of the hill known as Württemberg (previously Wirtemberg). On this hill the first castle of the Counts of Württemberg was built in 1083 by Conrad of Beutelsbach who subsequently became Konrad I, Count of Württemberg and is considered the founder of the Württemberg dynasty. The hill also gave its name to the State of Württemberg. The castle was rebuilt in 1316 by Count Eberhard