Nippon Mining

Japan Energy Corporation (株式会社ジャパンエナジー, Kabushiki-gaisha Japan Enajī^?) was a Japanese petroleum company, a wholly owned subsidiary of Nippon Mining Holdings (新日鉱ホールディングス株式会社, Shin-Nikkō Hōrudingsu Kabushiki-gaisha^?). The petroleum products of Japan Energy Corporation were sold by filling stations under the brand name JOMO.

The predecessor to Japan Energy was first established in 1905 as a mining company, which expanded into oil exploration in 1914. After numerous mergers and reorganizations, in 1992 the company established a separate company for its mining business called Nippon Mining & Metals, and the remaining oil company renamed itself to Japan Energy Corporation. In 2002, both companies established Nippon Mining Holdings as its holding company. In 2010, Nippon Mining merged with Nippon Oil to become JX Holdings, and the petroleum assets of both Japan Energy and Nippon Oil were reorganized into two companies, JX Nippon Oil & Energy and JX Nippon Oil & Gas Exploration.

...
Wikipedia