Karl Friedrich Jakob

RWTÜV GmbH is a technology service provider based in Essen, Germany, with subsidiaries in Germany. The German company's focus is on diversity, integrity, communication, customer orientation, sustainability, and entrepreneurship. The private company provides services in energy and environmental, telecommunications, insurance, and advanced consulting. The company has made strategic investments and is a secure partner for investments. The company also prioritizes company succession. The CEO of the company is Reinhold Rüther.

Universitätsklinikum Knappschaftskrankenhaus Bochum GmbH operates as a hospital and medical center. Its services include palliative care, health care management and nursing. The company was founded in 1908 and is headquartered in Bochum, Germany.

Part of Lebenshilfe fuer Behinderte eV, Albert-Schweitzer-Einrichtungen fuer Behinderte gGmbH is a private company based in Dinslaken, Germany. The German company provides services for disabled individuals, including the KoKoBe and a café. The CEO of the company is Meinhard Reichelt.

Van Ameyde International BV offers internal claims process auditing for the insurance industry. Its services include claims handling, claims adjusting and surveying such as outsourcing claims processes, claims overflow services, fleet management, and risk management. The company was founded by H.A. van Ameyde in 1945 and is headquartered in Rijswijk, the Netherlands.

Universitätsklinikum Essen A.d.ö.R. is a top-rated hospital located in Essen, Germany. The hospital is part of the Universitätsmedizin Essen hospital network, which includes 15 other subsidiaries such as the Ruhrlandklinik, St. Josef Krankenhaus Werden, Herzchirurgie Huttrop, and Westdeutsche Protonentherapiezentrum Essen. The hospital network employs approximately 11,000 people and has 1,700 beds.

RAG Coal International AG operates as a holding company with interest in specializing in coal producing, manufacturing and trading of mining equipment. The company was founded in 1996 and is headquartered in Essen, Germany.

Deutsche Steinkohle AG provides coal mining services. Its coke coal is used primarily for the production of steel and its hard coal is used for power generation. It operates mines in Northrhine-Westphalia, in the Saarland and a coking plant in Northrhine-Westphalia. The company is headquartered in Herne, Germany.

Part of RAG-Stiftung, RAG AG specializes in coal mining. The private company is based in Essen, Germany. The CEO of the German company is Peter Schrimpf.