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The growth and development of Asahi Kasei tracing back to the establishment of Asahi Fabric in 1922.
| 1922 | Asahi Fabric Co., Ltd. established | |
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| 1931 | Nobeoka Ammonia Fiber Co., Ltd. established, producing ammonia, nitric acid, and other chemicals (paid-in capital ¥10 million, the formal establishment of Asahi Kasei). |
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| 1933 | Nobeoka Ammonia Fiber acquires Japan Bemberg Fiber Co., Ltd. (producing Bemberg™ cupro fiber) and Asahi Fabric Co., Ltd. (producing viscose rayon), forming Asahi Bemberg Fiber Co., Ltd. (paid-in capital ¥46 million). |
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| 1943 | Asahi Bemberg Fiber acquires Japan Nitrogenous Explosives Co., Ltd., forming Japan Nitrogenous Chemical Industry Co., Ltd. (paid-in capital ¥54.4 million). | |
| 1946 | Name changed to Asahi Chemical Industry Co., Ltd. (paid-in capital ¥54.4 million). | |
| 1949 | Shares listed in Tokyo, Osaka, and Nagoya. | |
| 1952 | Operation at Kawasaki Works begins with establishment of Asahi-Dow Co., Ltd. as a petrochemical joint venture with the Dow Chemical Company. | |
| 1957 | Asahi-Dow begins production of polystyrene, entering the plastics business. | |
| 1959 | Production of acrylic staple fiber begins (production ended March 2003). |
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| 1960 | Asahi-Dow introduces Saran Wrap™ cling film to the Japanese market. |
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| 1962 | Production of acrylonitrile begins at Kawasaki Works. | |
| 1967 | Construction materials operations begin with production of Hebel™ autoclaved aerated concrete (AAC) panels. |
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| 1968 | Petrochemical operations at Mizushima Works begin with establishment of Sanyo Petrochemical Co., Ltd. | |
| 1971 | Start-up of glass fabric business with establishment of Asahi-Schwebel Co., Ltd. | |
| 1972 | Ethylene plant begins operation at Sanyo Ethylene Co., Ltd. (merged with Sanyo Petrochemical in April 1995) with capacity of 350,000 t/y. |
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| Housing operations begin with launch of Hebel Haus™ steel-frame homes. | ||
| Asahi Kasei Homes Corp. established. | ||
| 1974 | Asahi Medical Co., Ltd. (now Asahi Kasei Medical Co., Ltd.) established. Medical device operations begin with start of artificial kidney production. |
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| 1976 | Textile operations reinforced with establishment of Asahi Kasei Textile Co., Ltd. | |
| 1976 | Asahi Kasei Construction Materials Corp. established. | |
| 1980 | Hall element production begins with establishment of Miyazaki Electronics Co., Ltd. (now Asahi Kasei Electronics Co., Ltd.) | |
| 1982 | Asahi-Dow merges with Asahi Chemical, synthetic resin operations are reinforced. | |
| 1983 | Semiconductor operations begin with establishment of Asahi Microsystems Co., Ltd. (now Asahi Kasei Microsystems Co., Ltd.) |
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| 1992 | Pharmaceuticals and liquors maker Toyo Jozo Co., Ltd. merges with Asahi Chemical. | |
| 1994 | Asahi Kasei Textile merges with Asahi Chemical. | |
| 2000 | Performance resin compounding facilities in Europe and US acquired from Nippon Steel Chemical Co., Ltd. | |
| 2001 | Name changed to Asahi Kasei Corp. | |
| 2002 | Shochu and low-alcohol beverage operations divested to Asahi Breweries, Ltd. and The Nikka Whiskey Distilling Co., Ltd. | |
| 2003 | Sake operations divested to Oenon Holdings Corp. | |
| Transformation to a holding company configuration with Asahi Kasei Corp. as holding company and Asahi Kasei Chemicals Corp., Asahi Kasei Homes Corp., Asahi Kasei Pharma Corp., Asahi Kasei Fibers Corp., Asahi Kasei EMD Corp., Asahi Kasei Construction Materials Corp., and Asahi Kasei Life & Living Corp. as core operation companies. | ||
| 2007 | Asahi Kasei Life & Living merges with Asahi Kasei Chemicals. | |
| 2008 | Asahi Kasei Kuraray Medical Co., Ltd. and Asahi Kasei Medical Co., Ltd. begin operation as core operating companies. | |
| 2009 | Asahi Kasei E-materials Corp. begins operation as a core operating company. Asahi Kasei EMD name changed to Asahi Kasei Microdevices. | |
| 2012 | Integration of Asahi Kasei Kuraray Medical and Asahi Kasei Medical. | |
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