| 1946 |
JAPAN ORGANO Co., Ltd. founded in Suwa, Nagano Prefecture
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| 1951 | Japan's first large pure water system completed |
| 1952 | Forms an alliance with Rohm & Haas and becomes a general agency for Amberlite |
| 1960 | Takes a stake in Nihon Suiko Co., Ltd. (present Kansai Organo Shoji Co., Ltd.) |
| 1961 | Lists on the Second Section of the Tokyo Stock Exchange |
| Establishes Organo Softener Co., Ltd. (present Tokyo Organo Shoji Co., Ltd.) in Chiyoda-ku, Tokyo | |
| 1966 | Changes name to Organo Corporation |
| 1972 | Forms Hokkaido Organo Shoji Co., Ltd. (present Organo Hokkaido Corporation) in Sapporo |
| Establishes Kyushu Organo Shoji Co., Ltd. (present Organo Kyushu Corporation) in Fukuoka, Fukuoka Prefecture | |
| 1974 | 1974 Takes a stake in Maruei Kogyo Co. and changes its name to Organo Koji Tokyo Co., Ltd. (present Oragano Plant Service CORPORATION) |
| 1985 | Lists on the First Section of the Tokyo Stock Exchange |
| Satte factory completed in Satte, Saitama Prefecture | |
| 1986 | 1986 Founds Organo (Malaysia) SDN. BHD. (present Organo (Asia) SDN. BHD.) |
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The Central Research Laboratory completed in Toda, Saitama Prefecture
 |
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| 1989 | Sets up joint venture, Oragano (Thailand) Co., Ltd. in Thailand |
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1989 Tsukuba factory completed in Tsukuba, Ibaraki Prefecture
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| 1995 | Establishes office in Taiwan |
| 1996 | Founds Eco-Techno Corporation |
| 1997 | Moves head office to Toyocho, Koto-ku, Tokyo |
| 1999 | Establishes Organo (UK) Ltd. in the United Kingdom |
| 2000 |
Iwaki Factory completed in Iwaki, Fukushima Prefecture
 |
| Forms Chubu Organo Shoji Co., Ltd. (present Organo Chubu Corporation) in Nagoya,Aichi Prefecture | |
| Establishes Tohoku Organo Shoji Co., Ltd. (present Organo Tohoku Corporation) in Sendai, Miyagi Prefecture | |
| Sets up Organo (Singapore) PTE LTD in Singapore | |
| 2001 | Establishes PT.Organo Indonesia in Indonesia |
| 2002 | Forms Rhodia Organo Food Tech Co., Ltd. (present Organo Danisco Food Tech Co., Ltd.) |
| Establishes Organo (Shanghai) Water Treatment Co., Ltd., a subsidiary, in Shanghai, China | |
| 2003 | Establishes Organo (Suzhou) Water Treatment Co., Ltd., in Suzhou, China |
| 2004 | Sets up Organo High Tech Co., Ltd. in Syunan, Yamaguchi Prefecture |
| 2005 | Makes Yamashita Yakuhin Co., Ltd. a subsidiary |
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Moves the R&D Center to Sagamihara, Kanagawa Prefecture
 |
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| 2006 | Establishes Organo Technology Co., Ltd in Taiwan. |
| Opens Beijing office in China | |
| 2008 | Expands R&D Center for gathering research functions |
