Mitsumasa Okamoto

Part of Japan Petroleum Exploration Co., Ltd., Japex Montney Ltd. develops and produces natural gas. The company is based in Calgary, Canada.

Part of Japan Petroleum Exploration Co., Ltd., Japex Offshore Ltd. engages in exploration, processing, trading and transportation of petroleum & natural gas and equipment lease services. The company is based in Tokyo, Japan.

Part of Japan Petroleum Exploration Co., Ltd., Japex Garraf Ltd. operates and develops. The company is based in Tokyo, Japan.

Japan Canada Oil Sands Ltd. operates as an oil sands extraction company. The company was founded in 1978 and is headquartered in Calgary, Canada.

The Institute of Energy Economics, Japan engages in research activities in the energy field. It provides analysis on environmental problems and international cooperation on energy. It also recommends policies based on future energy and environmental outlook. The company was founded on June 29, 1966 and is headquartered in Tokyo, Japan.

Japan External Trade Organization is a government-related organization that works to promote mutual trade and investment. It promotes foreign direct investment (FDI) into Japan; assists business expansion of developing countries; contributes to trade policies and economic partnerships; and researches developing economies. The company was founded on October 1, 2003 and is headquartered in Tokyo, Japan.

Japex Energy Co., Ltd. engages in the purchase and sale of petroleum products such as gasoline, naphtha, kerosene, light oil, heavy oil, asphalt, lubricating oil, liquefied petroleum gas, liquefied natural gas (LNG), petroleum coke, industrial chemicals, fertilizers, pigments, dyes, concrete admixtures, paints; automotive parts and car goods such as friction agents, tires, tire wheels, mufflers; liquefied petroleum gas storage containers; air-conditioning equipment, kitchen equipment, oil and gas appliances; biofuels and natural refrigerants. It also engages in the buying, selling, leasing and management of real estate properties. The company was founded on October 30, 2009 and is headquartered in Tokyo, Japan.

C&O Pharmaceutical Technology (Holdings) Ltd. manufactures and distributes pharmaceutical products. It offers anti-infection and gastrointestinal drugs, drugs for ageing adults, and specialized drugs. The firm's products are used for various indications, such as skin soft tissues infections, analgesic and antipyretic, indigestion or gastro esophageal reflux disorder, respiratory tract infections, sinusitis, hypertension and migraine. The company was founded by Lai Chi Ma and Bin Gao in 2003 and is headquartered in Hong Kong.

Part of Japan Petroleum Exploration Co., Ltd., Canada Oil Sands Co., Ltd. is a Japanese company that explores, refines, produces, supplies, and sells oil and gas. The company is based in Shinagawa-ku, Japan. Canada Oil Sands Co. was acquired by Japan Petroleum Exploration Co., Ltd. from the Government of Japan on January 14, 2005.

Part of Japan Petroleum Exploration Co., Ltd., JAPEX UK E&P Ltd. engages in exploration of hydrocarbons. The company is based in London, UK.