| May 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). |
| July 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). |
| April 1943 |
Asahi Bemberg Fiber acquires Japan Nitrogenous Explosives Co., Ltd., forming Japan Nitrogenous Chemical Industry Co., Ltd. (paid-in capital ¥54.4 million). |
| April 1946 |
Name changed to Asahi Chemical Industry Co., Ltd. (paid-in capital ¥54.4 million). |
| May 1949 |
Shares listed in Tokyo, Osaka, and Nagoya. |
| July 1952 |
Operation at Kawasaki Works begins with establishment of Asahi-Dow Co., Ltd. as a petrochemical joint venture with the Dow Chemical Company. |
| February 1957 |
Asahi-Dow begins production of polystyrene, entering the plastics business. |
| May 1959 |
Production of acrylic staple fiber begins (production ended March 2003). |
| September 1960 |
Asahi-Dow introduces Saran Wrap™ cling film to the Japanese market. |
| June 1962 |
Production of acrylonitrile begins at Kawasaki Works. |
| August 1967 |
Construction materials operations begin with production of Hebel™ autoclaved aerated concrete (AAC) panels. |
| July 1968 |
Petrochemical operations at Mizushima Works begin with establishment of Sanyo Petrochemical Co., Ltd. |
| February 1971 |
Start-up of glass fabric business with establishment of Asahi-Schwebel Co., Ltd. |
| April 1972 |
Ethylene plant begins operation at Sanyo Ethylene Co., Ltd. (merged with Sanyo Petrochemical in April 1995) with capacity of 350,000 t/y. |
| September 1972 |
Housing operations begin with launch of Hebel Haus™ steel-frame homes. |
| November 1972 |
Asahi Kasei Homes Corp. established. |
| July 1975 |
Asahi Medical Co., Ltd. (now Asahi Kasei Kuraray Medical Co., Ltd.) begins medical device operations with start of artificial kidney production. |
| April 1976 |
Textile operations reinforced with establishment of Asahi Kasei Textile Co., Ltd. |
| September 1976 |
Asahi Kasei Construction Materials Corp. established. |
| July 1980 |
Hall element production begins with establishment of Miyazaki Electronics Co., Ltd. (now Asahi Kasei Electronics Co., Ltd.) |
| October 1982 |
Asahi-Dow merges with Asahi Chemical, synthetic resin operations are reinforced. |
| August 1983 |
Semiconductor operations begin with establishment of Asahi Microsystems Co., Ltd. (now Asahi Kasei Microsystems Co., Ltd.) |
| January 1992 |
Pharmaceuticals and liquors maker Toyo Jozo Co., Ltd. merges with Asahi Chemical. |
| October 1994 |
Asahi Kasei Textile merges with Asahi Chemical. |
| July 2000 |
Performance resin compounding facilities in Europe and US acquired from Nippon Steel Chemical Co., Ltd. |
| January 2001 |
Name changed to Asahi Kasei Corp. |
| September 2002 |
Shochu and low-alcohol beverage operations divested to Asahi Breweries, Ltd. and The Nikka Whiskey Distilling Co., Ltd. |
| July 2003 |
Sake operations divested to Oenon Holdings Corp. |
| October 2003 |
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. |
| April 2007 |
Asahi Kasei Life & Living merges with Asahi Kasei Chemicals. |
| October 2008 |
Asahi Kasei Kurarey Medical Co., Ltd. and Asahi Kasei Medical Co., Ltd. begin operation as core operating companies. |
| April 2009 |
Asahi Kasei E-materials Corp. begins operation as a core operating company. Asahi Kasei EMD name changed to Asahi Kasei Microdevices. |
