1966 | August | Oono Development founded Representative Director Teruo Ōno Construction business (Civil Engineering Works) |
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1973 | November | Reorganized as Oono Development Inc. Representative Director Teruo Ōno Capital stock JPY 5,000,000 |
1975 | March | Construction business permit granted (by Ehime prefectural governor) |
1980 | February | Company name changed to Oono Associates Inc. |
May | Industrial waste treatment permit granted | |
1982 | November | Regular landfill treatment site opened |
1984 | November | Capital stock increased to JPY 20,000,000 |
1985 | February | Controlled landfill disposal site opened |
1986 | February | General waste treatment permit granted |
1988 | April | Waste incineration facility no. 1 installed |
1989 | November | Waste incineration facility no. 2 installed |
1992 | February | Capital stock increased to JPY 70,000,000 |
1993 | July | Specially controlled industrial waste treatment business permit granted |
1996 | June | Waste incineration facilities no. 3 and 4 installed |
2002 | May | Advanced leachate treatment facility completed |
2007 | June | Regular landfill disposal site expanded |
August | Controlled landfill disposal site expanded | |
2009 | October | Institute of Environmental Science and Technology (Oono Labo) established |
2011 | April | Tōon Treatment Facility’s name changed to “Frep Tōon” Combined treatment facility (with 2 rotary kilns) constructed and starts operation |
July | Contaminated soil treatment permit granted (first permit in the prefecture) | |
2012 | May | Opened Tokyo Branch Office |
2013 | March | Large heavy machine SK2200D delivered and starts operation |
April | Large heavy machine SK3500D delivered and starts operation | |
2014 | February | Authorization for low-concentration PCB waste detoxification Minister of the Environment’s authorization no. Heisei26-3 (2014-3) |
December | Authorization for low-concentration PCB waste detoxification Minister of the Environment’s authorization no. Heisei26-9 (2014-9) |
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2015 | July | Opened Osaka Branch Office |
2016 | July | Large 800-ton LTM1800NX crane delivered and starts operation |
August | Change of representative director Representative Director Teruo Ōno appointed Chair of the Board of Directors Director Tsuyoshi Ōno appointed Representative Director |
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2018 | March | Authorization for low-concentration PCB waste detoxification Minister of the Environment’s authorization no. Heisei30-9 (2018-9) |
May | Contaminated soil treatment permit granted(RK144) | |
2019 | July | Opened Fukuoka Sales Office |
September | Opened Strider Courses in Mattera Forest(Social contribution activities) | |
October | Controlled landfill disposal site expanded | |
2020 | April | Lithium-ion battery detoxification and recycling business starts |
September | Opened Kyushu Branch Office | |
November | Opened Chita Office | |
2022 | April | Teruo Ōno appointed Representative Director |