- 1905明治38年
-
The founder Tokichi OKUNO established OKUNO Toh Shoten and dealt in industrial chemicals.
- 1922大正11年
-
Seiroku OKUNO took over the organization and changed OKUNOsei Shoten to become a wholesaler.
Became the first company in Japan to successfully manufacture baking powder - 1926大正15年
-
Constructed a plant at Joto-ku, Osaka, and started manufacturing and sales of industrial chemicals.
- 1936昭和11年
-
Incorporated OKUNOsei Shoten & Co., Ltd. from a private organization.
- 1940昭和15年
-
Constructed Plant No.1.
- 1944昭和19年
-
Incorporated and reorganized into OKUNO Chemical Industries Co., Ltd. with the capital of JPY 600,000
- 1947昭和22年
-
Started selling colors for ceramic wares
- 1949昭和24年
-
Started manufacturing and selling fatty buffing compounds
- 1951昭和26年
-
Started manufacturing and sales of glass enamels for firing
- 1952昭和27年
-
Increased capital to JPY 1,500,000.
Opened Tokyo Branch. - 1958昭和33年
-
Start manufacturing,, selling brighteners and related products for plating
- 1964昭和39年
-
Increased capital to JPY 30,000,000
- 1968昭和43年
-
Developed emulsifiers for cake, and started manufacturing and selling
- 1972昭和47年
-
Developed improves for noodles, started manufacturing and selling
- 1976昭和51年
-
Developed low melting point glass, started manufacturing and selling
- 1978昭和53年
-
Increased capital to JPY 50,000,000
- 1979昭和54年
-
Established joint venture company OKUNO ENGINEERING (H.K.) LTD. in Hong Kong
Increased capital to JPY 70,000,000 - 1983昭和58年
-
Moved head office to its present location
- 1984昭和59年
-
Opened R&D center for Inorganic Materials Dept.
- 1986昭和61年
-
Opened R&D center for Metal Finishing Dept.
- 1997平成9年
-
Increased owned capital at OKUNO ENGINEERING (H.K.) LTD. to 100%
- 1998平成10年
-
Opened R&D center for Food Dept.
- 1999平成11年
-
Opened new center for Inorganic Materials Dept.
Acquired ISO14001 certification for Hanaten Plant No.1, Plant No.2 and Plant No.3. - 2001平成13年
-
Acquired ISO 14001 certification for all the facilities of OKUNO
- 2003平成15年
-
Acquired ISO 9001:2000 certification for all the facilities of OKUNO
- 2005平成17年
-
Published 100 years anniversary memorial book "Thoughts - Progress for 100 years" in commemoration of 100th anniversary since the establishment of OKUNO Shoten
- 2006平成18年
-
Opened Plant No.5（for Food Dept.)
- 2007平成19年
-
Established OKUNO-AUROMEX (THAILAND) CO., LTD.
- 2008平成20年
-
Established OKUNO-AUROMEX (VIETNAM) CO., LTD.
- 2012平成24年
-
Established OKUNO SHANGHAI TECHNOLOGY LTD.
Established OKUNO KOREA CO., LTD. in Seoul
Established HANATEN administration building
Established OKUNO International Corporation in Michigan, USA - 2013平成25年
-
Established OKUNO ASIA (THAILAND) CO., LTD. in Bangkok.
- 2015平成27年
-
Established OKUNO (EU) OFFICE in Germany
- 2016平成28年
-
Established OKUNO (THAILAND) CO., LTD.
Opened Advanced Technology Research Center - 2020令和2年
-
Changed OKUNO-AUROMEX （THAILAND）CO., LTD. to Auromex Co., Ltd. as agency
Changed OKUNO-AUROMEX （VIETNAM）CO., LTD. to Auromex Vietnam Co., Ltd. as agency
Opened Hanaten Physical Distribution Center
Established OKUNO TAIWAN CO., LTD. - 2021令和3年
-
Close OKUNO (EU) OFFICE
- 2022令和4年
-
Opened Quality Assurance Center and Cafeteria