| 1986 | Apr. | Cosmo Oil established through tripartite merger of Daikyo Oil Co.,Ltd., Maruzen Oil Co., Ltd., and former Cosmo Oil (Cosmo Refining) . |
| Apr. | The “Cosmo” in-house organ launched. | |
| Sep. | The Abu Dhabi office opened. |
| 1987 | Jul. | The Cosmo “Magnum 100” high-octane gasoline launched. |
| 1988 | Jan. | Cosmo Research Institute (CRI) established. |
| Jun. | The “Cosmo the Card” credit card issued. | |
| Oct. | Cosmo Trade & Service Co. established. |
| 1989 | Oct. | Asian Oil Co., Ltd. merged into Cosmo Oil. |
Back to Page top1990-
| 1990 | May. | CRI receives the Japan Petroleum Institute (JPI) Award for its “commercialization of high-performance alkaline detergent for lubricating oil". |
| Jun. | Cosmo Lubricants (Thailand) Co., Ltd. and Cosmic Oil Co., Ltd. established. | |
| Sep. | Co-generation facilities completed at Yokkaichi Refinery. |
| 1991 | Jul. | Cosmo Oil International Pte., Ltd. established Cosmo Oil (U.K.) PLC. established. |
| 1992 | Mar. | Cosmo Oil, CRI and Cosmo Petrotech Co., Ltd. jointly win the Okochi Memorial Production Prize for the “development of a new high-performance detergent for lubricating oil". |
| May. | The Cosmo “Super Magnum” high-octane gasoline launched. |
| 1993 | Mar. | MTBE, Alkylation unit and recycle unit for used sulfuric acid facilities completed and start commercial operations on March 28. |
| 1994 | Jan. | The “C's MAIL&rdquo magazine for Cosmo Oil shareholders launched. |
| Feb. | Cosmo Oil, CRI, the Research Association for Residual Oil Processing jointly win the Japan Institute of Energy Award for the “development and industrial application of a new residual oil hydrogenated cracking catalyst and process&rdquo. | |
| Apr. | Cosmo Honorary Chairman Yoshiro Nakayama (now deceased) awarded the Independent Medal by the United Arab Emirates. | |
| Oct. | Deep desulfurization unit for diesel fuel completed at Chiba Refinery. | |
| Oct. | The China Office opened. | |
| Dec. | The industry's first 24-kl tank truck fleet introduced. |
| 1995 | Feb. | Sakai Refinery receives the Director-General of the Agency of Natural Resources and Energy Award. |
| Apr. | Cosmo Oil, CRI, and Heavy Oil Management Technical Research Association jointly win the Japan Industrial Technics Grand Prix and the Prime Minister Award for their joint development of the “new technology for residual oil cracking process". | |
| Apr. | The new “SEE-YA CARD” membership card launched for cash-paying customers. | |
| May. | Cosmo Oil, CRI, Cosmo Petrotech and other partners jointly win the JPI Advanced for the development of the “viscous coupling oil". | |
| Oct. | Cosmo Lubricants (Taiwan) Co., Ltd. established. | |
| Oct. | The Shonan Seminar House employee training center established in Shonan Kokusai-mura in Yokosuka, Kanagawa. |
| 1996 | May. | Sakaide Refinery gains the ISO-9002 international quality management certificate. |
| May. | A crude oil development block acquired in the Timor Sea, northwest of Australia. | |
| May. | Cosmo Oil, CRI, and the Petroleum Energy Center (PEC) jointly win the JPI Award for their joint “development and industrial application of a new catalyst for residual fluid catalytic cracking unit". | |
| Nov. | distillate hydrodesulfurization unit completed in Sakai Refinery. | |
| Nov. | A new “White Station” drive-through dry-cleaning store opened in the suburbs of Motomachi, Yokohama. |
| 1996 | May. | Sakaide Refinery gains the ISO-9002 international quality management certificate. |
| May. | A crude oil development block acquired in the Timor Sea, northwest of Australia. | |
| May. | Cosmo Oil, CRI, and the Petroleum Energy Center (PEC) jointly win the JPI Award for their joint “development and industrial application of a new catalyst for residual fluid catalytic cracking unit". | |
| Nov. | distillate hydrodesulfurization unit completed in Sakai Refinery. | |
| Nov. | A new “White Station” drive-through dry-cleaning store opened in the suburbs of Motomachi, Yokohama. |
| 1998 | Feb. | The Orion Trader double-hulled tanker vessel launched. |
| Mar. | Chiba, Yokkaichi and Sakaide Refineries gain the ISO-14001 international environmental management certificates, respectively. | |
| Apr. | The first staffed self-service service station (SS) combined with the B-cle car care convenience store opened in Funabashi, Chiba Prefecture. | |
| Jul. | Cosmo Oil Lubricants Co., Ltd. established. | |
| Oct. | Crude oil test-production starts in the offshore block in Qatar. |
| 1999 | Jan. | Cosmo Oil becomes the first in the Japanese oil industry to introduce debit card payment systems at its 2,000 SS's. |
| May. | Cosmo Oil and CRI jointly win the JPI Award for their joint development and industrial application of an innovative catalyst for the isomerization of light naphtha". | |
| Jun. | Eight order processing centers nationwide consolidated into two - one for fuel products and the other for lubricant products. | |
| Aug. | The new “SS Order Card” for hearing impaired customers developed and distributed to organizations for the hearing impaired nationwide. |
2000-
| 2000 | Apr. | Cosmo Oil started seriously working on developing oil-based fuel cells, a highly prominent next-generation highly efficient energy. |
| Apr. | Internet Business Department established to grow Internet businesses at Cosmo Oil. | |
| Sep. | Cosmo Oil establishes its Customer Center to provide an integrated contact for customer enquiries. | |
| Oct. | Cosmo Oil and Nippon Mitsubishi Oil Corp. (currently Nippon Oil Corp.) to jointly establish Nippon Global Tanker Co., Ltd. to integrate ocean transport services. | |
| Nov. | Cosmo Oil, Kansai Electric Power Co., Inc., Iwatani International Corporation and Ube Industries, Ltd. jointly establish Sakai LNG K.K., a company specialized in constructing and operating LNG terminals. | |
| Dec. | Cosmo Oil makes a capital participation in LNG Chubu Corp. to start LNG marketing business. |
| 2001 | Feb. | Sakaide Refinery received the Director-General's National Resources and Energy Award in the Successful Cases of Energy Conservation 2000. |
| Mar. | Cosmo Oil's proprietary credit card, “Cosmo The Card,” starts the ETC service for automated highway toll charge payment. | |
| Apr. | Cosmo Oil develops a new stationary butane gas-fired fuel cell package for the home market for power generation testing. | |
| Apr. | Cosmo Oil starts demonstration tests for a new micro gas turbine system firing petrochemical fuel. | |
| May. | Abu Dhabi Oil Co., Ltd. implements the Zero Flare Project at its oil production facility for the first time in the Middle East region. | |
| Jun. | Cosmo Oil signs a CO_ emission option agreement with an Australian forestation company. | |
| Sep. | Cosmo Oil publishes its first “Environmental Report 2001". | |
| Dec. | Cosmo Oil launches the “Tropical Rain Forest Project” as part of its environmental contribution efforts. |
| 2002 | Jan. | Cosmo Oil launches its new proprietary “Cosmo The Card Eco” card to provide an opportunity for cardholders to participate in environmental protection |
| Feb. | Cosmo Sea Farming Inc. established. | |
| Mar. | Cosmo Oil introduces solar power generation systems into its affiliated service stations. | |
| Apr. | Cosmo Oil develops the Cosmo Quick Box, a new automated “Cosmo The Card” card issuance machine. | |
| May. | Cosmo Oil receives an excellent award in the 5th Green Reporting Award with its corporate “Environmental Report 2001” as the first to be awarded such in the oil industry. | |
| Jul. | Cosmo Oil leases a site for constructing a new “hydrogen supply station” for the Fuel Cell-Powered Vehicle Demonstration Research. | |
| Aug. | Cosmo Oil successfully develops a catalyst applicable to the GTL (Gas to Liquid) technology that can be used to manufacture liquid fuel from natural gas. |
| 2003 | Apr. | Memorandum Of Understanding (MOU) with Papua New Guinean government |
| Apr. | Cosmo Oil succeeded by reduction of excess sludge occurring in oil refinery | |
| Jun. | Diction of direction of environmental response and refining capacity optimization | |
| Jun. | Establishment of Cosmo energy exploration & development Co., Ltd. inauguration | |
| Sep. | Qatar petroleum development project shift to development to commercial production | |
| Oct. | Start selling off-gas cleanup unit of diesel car | |
| Nov. | Cosmo Oil succeeded in production of hydrogen for fuel cell vehicle from GTL oil | |
| all year round | Cosmo Oil carrying out "Cosmo Earth Conscious Act Clean Campaign" through the year |
| 2004 | Mar. | Cosmo Oil Leases First Unit of Nissan's X-TRAIL FCV. |
| Apr. | The first pilot shop, Lub. Oil Exchange Plaza "Mr.Lio" | |
| Jun. | Tokyo Cosmo logistics Co., Ltd. is reorganized by Cosmo delivery service Co., Ltd. and subsidize 100% and reinforce delivery service business basement | |
| Sep. | Strengthening of Ties between Cosmo Oil Co., Ltd. and Nippon Oil Corporation ~A cross-licensing agreement related to fuel oil quality patents has been made~ |
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| Oct. | Establishment of a Company to Produce and Distribute Products Containing 5-Aminolevulinic Acid (ALA) Expansion of the product to overseas markets followed by domestic introduction. |
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| Nov. | Commencement of Commercial Operation of Cosmo Oil Sakata Wind Power Plant. |
| 2006 | Nov. | Investment in Sophisticated Oil Refineries and Entry into the Wholesale Business of CARB-diesel on the West Coast Area of the US |
| Nov. | Cosmo Oil Co., Ltd. Participates in Laffan Refinery Co., Ltd. | |
| Dec. | Mutual Utilization of New Facilities |
| 2007 | Apr. | Disaster-relief Donations for Victims of Earthquake/Tunami in the Solomon Islands |
| Sep. | Announcement of Adjustment of Conversion Price | |
| Sep. | Announcement of Change of Major Shareholders and "Other Related Companies" | |
| Sep. | Announcement of Offer of Shares to be Issued by Third-Party Allotment | |
| Sep. | The Strategic Partnership between COSMO OIL COMPANY, LIMITED and International Petroleum Investment Company and the Allotment of New Shares | |
| Sep. | Announcement of Strategic Partnership Between Cosmo Oil Company, Limited and International Petroleum Investment Company | |
| Oct. | Notice Concerning the Amendment to the Forecast for Interim Business Performance | |
| Dec. | Announcement of Executive Appointments |
| 2008 | Jan. | New E&P Project in Australia |
| Apr. | Announcement of MOU in relation to the Strategic Cooperation of Oil Business between Cosmo Oil Co., Ltd. and Hyundai Oilbank Co., Ltd. | |
| Apr. | Cosmo Oil Eco Card Fund Fiscal Year 2008 "Living with Our Planet" Projects | |
| Apr. | Cosmo Oil Eco Card Fund - "Living with Our Planet" Projects The Fund Invites Global Warming Prevention Projects | |
| Oct. | Participation in the Block 11 EPSA in the State of Qatar |
| 2009 | Jun. | Announcement of Memorandum of Agreement between Cosmo Oil Co., Ltd. and Hyundai Oilbank Co., Ltd. in relation to the Establishment of a Joint Venture Company and Announcement of New Entry into the Paraxylene Business |
| Sep. | Commencement of Laffan Refinery Production in Qatar | |
| Oct. | Announcement of Paraxylene Joint Venture Agreement between Cosmo Oil Co., Ltd. and Hyundai Oilbank Co., Ltd. |
2010-
| 2010 | Feb. | Reduction of CDU Nameplate Capacity |
| Feb. | Acquisition of "EcoPower Co., Ltd." Shares | |
| Feb. | Completion ceremony for Coker Unit | |
| Mar. | Chile Earthquake Relief Donation | |
| Mar. | Refinery Throughput for April - June 2010 | |
| May. | Basic Policy for the Fourth Consolidated Medium-Term Management Plan (for Fiscal Years 2010-2012) | |
| May. | Main Terms and Conditions for Concession Renewal and New Concession Area |
| 2017 | Feb. | Announcement on Capital and Business Alliance |
| Mar. | Refining Optimization |
