| Meiji Era | ||
|---|---|---|
| Year 05 | 1872 | Takichi Aso begins mining the Shakanoo Goyo Tanzan and embarks upon his path in the coal industry |
| Year 20 (approx.) |
Takes on the name "Aso Shoten" (at that time, as an individual organization) | |
| Year 29 | 1896 | Kaho Ginko is established |
| Year 30 | 1897 | Kyushu Tetsudo Co., Ltd. is established |
| Year 32 | 1899 | Takichi Aso is elected as a member of the House of Representatives |
| Year 41 | 1908 | Kaho Dento Co., Ltd. is established (electric transmission begins in 1910) |
| Year 44 | 1911 | Construction of Iizuka Hospital (Aso Tanko Hospital) is completed (120 hospital beds) |
| Taisho Era | ||
| Year 02 | 1913 | Takichi Aso becomes director of Kyushu Suiryoku Denki Co., Ltd. |
| Year 03 | 1914 | Construction of Aso Shoten headquarters is completed (Former headquarters) |
| Year 06 | 1917 | Kyushu Sangyo Co., Ltd. is established, limestone mining and lime production begin |
| Year 07 | 1918 | Aso Shoten incorporates, Tackichi Aso becomes president |
| Iizuka Hospital begins medical care within the company | ||
| Year 08 | 1919 | Kyushu Sangyo Tetsudo Co., Ltd. is established, purchases Kyushu Sangyo Co., Ltd. |
| Year 09 | 1920 | Iizuka Hospital (name changed to Shiritsu Iizuka Hospital) starts providing medical care to the general public |
| Year 11 | 1922 | Takichi Aso becomes president of Kyushu Sangyo Tetsudo Co., Ltd. |
| Showa Era | ||
| Year 03 | 1928 | The Aso family motto is created, "Moderation is a virtue, idleness is a sin" |
| Year 04 | 1929 | Kyushu Kogyo Co., Ltd. is established |
| Kyushu Sangyo Co., Ltd. is established (severs from Kyushu Sangyo Tetsudo Co., Ltd.) | ||
| Year 05 | 1930 | Showa Dento Co., Ltd. is established (Kaho Dento Co., Ltd. is dissolved) |
| Year 08 | 1933 | Construction begins on the Kyushu Sangyo Co., Ltd. cement factory (the current Tagawa Plant) |
| Sangyo Cement Tetsudo Co., Ltd. is established. Takichi Aso becomes president. | ||
| (Kyushu Sangyo Tetsudo Co., Ltd. and Kyushu Sangyo Co., Ltd. merge) | ||
| Takichi Aso passes away. | ||
| Year 09 | 1934 | Takakichi Aso becomes president of Aso Shoten Co., Ltd. and Sangyo Cement Tetsudo Co., Ltd. |
| Initial firing of the current Tagawa Plant and the start of cement production | ||
| Year 11 | 1936 | Aso Shoji Co., Ltd. is established |
| Year 14 | 1939 | Aso Juku Educational Foundation Opens |
| (World War II starts) | ||
| Year 16 | 1941 | The business name changes from Aso Shoten Co., Ltd. to Aso Kogyo Co., Ltd. |
| Year 18 | 1943 | Sangyo Cement Tetsudo Co., Ltd. hands over its railway division to the National Railway |
| Year 20 | 1945 | Kaho Ginko and Fukuoka Ginko merge |
| (World War II ends) | ||
| Year 26 | 1951 | President Takakichi becomes president of Kyushu Electric Co., Inc. |
| Year 28 | 1953 | Alam Co., Ltd. is established |
| Year 29 | 1954 | Sangyo Cement Tetsudo Co., Ltd. and Aso Kogyo Co., Ltd. merge and change the business name to Aso Sangyo Co., Ltd. |
| Year 30 | 1955 | Construction is completed on the main building of Iizuka Hospital (one basement level, three above ground levels) |
| Year 32 | 1957 | Iizuka Hospital, in accordance with the law, adds general hospital to its name |
| Year 35 | 1960 | Aso Concrete Co., Ltd. is established (the predecessor to Fukuoka Concrete Co., Ltd.) |
| Year 36 | 1961 | Aso Foam Crete Co., Ltd. is established |
| Year 39 | 1964 | The current Kanda Plant is built and initially fired |
| Iizuka Hospital is designated as an emergency hospital | ||
| Year 41 | 1966 | Aso Cement Co., Ltd. separates and becomes independent of Aso Sangyo Co., Ltd. |
| Aso Petro Retailing Co., Ltd. is established (acquired by Aso Shoji Co., Ltd. in 2014) |
||
| Year 43 | 1968 | Aso Yoshio Trading Co., Ltd. is established |
| Year 45 | 1970 | Chikuho Densan Center is established (company name changed to Aso Information System Co., Ltd. in 1987) |
| Year 46 | 1971 | Aso Real Estate Co., Ltd. is established |
| Year 48 | 1973 | President Takakichi Aso becomes chairman |
| Vice President Taro Aso becomes president | ||
| 100th anniversary celebration of the founding of Aso | ||
| Aso Iizuka Golf Club opens | ||
| Year 49 | 1974 | First annual Iizuka Music Festival is held |
| Year 50 | 1975 | Construction of the Iizuka Hospital Central Wing is completed |
| Aso Saiseki Co., Ltd. is established (the company name is changed to Aso Mining Co., Ltd. in 1978) | ||
| Year 53 | 1978 | President Taro Aso becomes head of the Junior Chamber International Japan |
| Year 54 | 1979 | President Taro Aso runs and is elected to the Lower House and resigns as president |
| Yutaka Aso becomes president | ||
| Year 55 | 1980 | Chairman Takakichi Aso passes away |
| Year 56 | 1981 | Fukuoka Headquarters opens |
| Year 57 | 1982 | Construction of Iizuka Hospital Critical Care Center is completed |
| Year 59 | 1984 | Aso Temporary Center Co., Ltd. is established (the company name is changed to Aso Humaney Center Co., Ltd. in 1996) |
| Year 60 | 1985 | Aso Kaihatsu Co., Ltd. is established (merged with Aso Corporation in 2009) |
| Year 61 | 1986 | First entrance ceremony for Aso Business Computer College |
| Year 62 | 1987 | Aso Medical Services Co., Ltd. is established |
| Senboku Concrete Co., Ltd. is established | ||
| Heisei Era | ||
| Year 01 | 1989 | Iizuka Hospital is registered as a designated clinical training hospital |
| Aso Medical and Welfare College care worker program is newly established | ||
| Kyushu System Academy is established (the company name is changed to System Planet Co., Ltd. in 2002) | ||
| Aso Education Service Co., Ltd. is established | ||
| Serekuto Industry Co., Ltd. is established | ||
| Year 02 | 1990 | President Yutaka Aso is made Honorary Consul of the Royal Danish Honorary Consulate in Fukuoka |
| The management principle "We Deliver the Best" is instituted | ||
| Iizuka Hospital Center for Central Nervous Diseases opens | ||
| Aso Resicon Co., Ltd. is established (acquired by Aso Shoji Co., Ltd. in 2009) | ||
| Year 03 | 1991 | Seinan Concrete Co., Ltd. is established |
| Shenzhen Dapeng Cement Co., Ltd. is established | ||
| Year 04 | 1992 | Iizuka Hospital Department of Japanese Oriental Medicine opens |
| Better Nursing Co., Ltd. is established (acquired by Aso Medical Services Co., Ltd. in 2007) | ||
| Year 05 | 1993 | Commercialization of industrial waste disposal at both cement plants shifts into full swing |
| Year 07 | 1995 | Construction of the new club house at Aso Iizuka Golf Club is completed, a new course is completed (three courses available) |
| Aso Alpha Co., Ltd. is established | ||
| Year 08 | 1996 | Contract entered for capital participation in Shanghai Allied Cement Co., Ltd. |
| Year 09 | 1997 | Construction of the Iizuka Hospital Energy Center is completed |
| Year 10 | 1998 | Construction of the AI Building in the Momochihama Fukuoka Soft Research Park is completed |
| The Aso Group's 21st century vision is announced "Aso Group - Designing purpose by embodying peace of mind" | ||
| 125th anniversary celebration of the founding of Aso | ||
| Year 11 | 1999 | Human Energy Research Institute Co., Ltd. is established |
| Fukuri Kosei Club Kyushu Co., Ltd. is established | ||
| Year 12 | 2000 | Group management begins |
| The Aso Group's 21st century mission of "Contributing to the reform of social systems" is announced | ||
| Aso Accounting Service Co., Ltd. is established | ||
| Year 13 | 2001 | Aso Cement Co., Ltd. change its name to Aso Corporation, and the cement business spins off into a separate company. |
| Aso Cement Co., Ltd. acquires capital in Lafarge | ||
| Year 14 | 2002 | Aso System Solution Co., Ltd. is established |
| Year 16 | 2004 | Universe Create Co., Ltd. is established |
| Year 17 | 2005 | The new group management system goes into full-scale operation, "Speedy strategic compound management" |
| Sowa Cement Sales Co., Ltd. is established | ||
| Year 18 | 2006 | Kokura Trading Co., Ltd. is established |
| Nihon Heart Support Network Corporation is established | ||
| Year 19 | 2007 | Aso Medical Services Co., Ltd. acquires Better Nursing Co., Ltd. |
| Aso Care Services Co., Ltd. is established | ||
| Aso Records Management Co., Ltd. is established | ||
| Nippon Medical Property Management Co.,Ltd. is established | ||
| Year 21 | 2009 | Aso Corporation acquires Aso Kaihatsu Co., Ltd. |
| Aso Shoji Co., Ltd. acquires Aso Resicon Co., Ltd. | ||
| Year 22 | 2010 | President Yutaka Aso becomes chairman |
| Vice President Iwao Aso becomes president | ||
| Year 23 | 2011 | Aso Development Management Co.,Ltd. is established |
| Year 24 | 2012 | FAS Eco-Energy Co.,Ltd. is established |
| Year 25 | 2013 | The north building of Iizuka Hospital is inaugrated |
| Year 26 | 2014 | Aso Shoji Co., Ltd. acquires Aso Petro Retailing Co., Ltd. |
| * Includes partner companies and organizations | ||
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