| 2005-10-03 |
三菱化学と三菱ウェルファーマ（現田辺三菱製薬）が株式移転により、共同で、持株会社、三菱ケミカルホールディングスを設立 |
| 2005-10-03 |
Mitsubishi Chemical Holdings Corporation was jointly established by Mitsubishi Chemical Corporation and Mitsubishi Pharma Corporation, by means of a stock-for-stock exchange effective October 1, 2005. |
| 2006-10-10 |
東京都港区芝四丁目へ本社を移転 |
| 2006-10-10 |
The head office relocated to Shiba 4-chome, Minato-ku, Tokyo. |
| 2007-10-01 |
三菱樹脂を完全子会社化 |
| 2007-10-01 |
三菱ウェルファーマと田辺製薬が合併し、田辺三菱製薬誕生 |
| 2007-10-01 |
Mitsubishi Plastics, Inc. became a wholly-owned subsidiary of Mitsubishi Chemical Holdings Corporation. |
| 2007-10-01 |
Mitsubishi Pharma Corporation and Tanabe Seiyaku Co., Ltd. merged and became a listed subsidiary of Mitsubishi Chemical Holdings Corporation as Mitsubishi Tanabe Pharma Corporation. |
| 2008-04-01 |
三菱化学の機能材料事業、三菱樹脂、三菱化学ポリエステルフィルム、三菱化学産資、三菱化学エムケーブイが統合し、統合新社、三菱樹脂誕生 |
| 2008-04-01 |
Functional products businesses of Mitsubishi Chemical Corporation, Mitsubishi Plastics, Inc., Mitsubishi Polyester Film Corporation, Mitsubishi Chemical Functional Products, Inc., and Mitsubishi Chemical MKV Company were amalgamated to become a consolidated new company, Mitsubishi Plastics, Inc. |
| 2009-04-01 |
地球快適化インスティテュートを設立 |
| 2009-04-01 |
The KAITEKI Institute, Inc. was established. |
| 2010-03-28 |
三菱レイヨンを連結子会社化 |
| 2010-03-28 |
Mitsubishi Rayon Co., Ltd. became a consolidated subsidiary of Mitsubishi Chemical Holdings Corporation. |
| 2010-11-28 |
Mitsubishi Chemical Holdings America, Inc.を設立 |
| 2010-11-28 |
Mitsubishi Chemical Holdings America, Inc. was established. |
| 2011-01-17 |
三菱化学控股管理（北京）有限公司を設立 |
| 2011-01-17 |
Mitsubishi Chemical Holdings (Beijing) Co., Ltd. was established. |
| 2012-07-02 |
東京都千代田区丸の内1丁目へ本社を移転 |
| 2012-07-02 |
The head office relocated to Marunouchi 1-chome, Chiyoda-ku, Tokyo. |
| 2012-11-28 |
Mitsubishi Chemical Holdings Europe GmbHを設立 |
| 2012-11-28 |
Mitsubishi Chemical Holdings Europe GmbH was established. |
| 2013-03-01 |
クオリカプスを連結子会社化 |
| 2013-03-01 |
Qualicaps Co., Ltd. became a consolidated subsidiary of Mitsubishi Chemical Holdings Corporation. |
| 2013-04-01 |
事業会社の共通部門のスタッフ機能を担うシェアードスタッフカンパニーとして、三菱ケミカルホールディングスコーポレートスタッフを設置 |
| 2013-04-01 |
Mitsubishi Chemical Holdings Corporate Staff, Inc. was established as a Shared Services Company. |
| 2014-04-01 |
グループのヘルスケアソリューション関連事業を統合し、一体運営を担う生命科学インスティテュートを発足 |
| 2014-04-01 |
グループのR&D共通基盤技術を集約・統合し、高度化を担うMCHC R&Dシナジーセンターを設立 |
| 2014-04-01 |
The healthcare solutions and related businesses of the Group were integrated and to become Life Science Institute, Inc. |
| 2014-04-01 |
MCHC R&D Synergy Center, Inc. was established to collect and integrate common platform technologies from the R&D operations of Mitsubishi Chemical Group Corporation’ operating companies and strengthen R&D functions of the Group. |
| 2014-11-12 |
大陽日酸を経営統合、連結子会社化 |
| 2014-11-12 |
Taiyo Nippon Sanso Corporation became a consolidated subsidiary of Mitsubishi Chemical Holdings Corporation. |
| 2017-04-01 |
三菱化学、三菱樹脂、三菱レイヨンが統合し、三菱ケミカル発足 |
| 2017-04-01 |
Mitsubishi Chemical Corporation, Mitsubishi Plastics, Inc. and Mitsubishi Rayon Co., Ltd. were integrated to become a new company, Mitsubishi Chemical Corporation. |
| 2018-07-01 |
Diamond Edge Ventures, Inc.を設立 |
| 2018-07-01 |
Diamond Edge Ventures, Inc. was established. |
| 2020-03-02 |
田辺三菱製薬を完全子会社化 |
| 2020-03-02 |
Mitsubishi Tanabe Pharma Corporation became a wholly-owned subsidiary of Mitsubishi Chemical Holdings Corporation. |
| 2020-10-01 |
大陽日酸から日本酸素ホールディングスに商号変更 |
| 2020-10-01 |
Taiyo Nippon Sanso Corporation was changed its tradename to “Nippon Sanso Holdings Corporation.” |
| 2022-07-01 |
㈱三菱ケミカルホールディングスから三菱ケミカルグループ㈱に商号変更 |
| 2022-07-01 |
Mitsubishi Chemical Holdings Corporation was changed its tradename to “Mitsubishi Chemical Group Corporation.” |
