| 1950-02 |
Founded Hokko Chemical Co., Ltd. and established headquarters in Chiyoda-ku, Tokyo. |
| 1950-02-27 |
Established: February 27, 1950 (Showa 25) |
| 1950-12 |
Relocated headquarters to Sapporo, Hokkaido (now Chuo Ward, Sapporo). |
| 1953-11 |
Changed trade name to Hokko Chemical Industry Co., Ltd. (current trade name). |
| 1954-11 |
Established Central Research Institute in Kamakura, Kanagawa Prefecture (moved to Atsugi, Kanagawa Prefecture in 1966). |
| 1961-03 |
Established Niigata Factory in Niigata City. |
| 1961-10 |
Listed on the Second Section of the Tokyo Stock Exchange. |
| 1963-04 |
Established Hokuko Bardal Co., Ltd. (now Hokko Sangyo Co., Ltd., consolidated subsidiary). |
| 1965-05 |
Registered Kasumin agent. |
| 1966-11 |
Relocated Central Research Institute (now Development Research Institute) from Kamakura to Atsugi, Kanagawa Prefecture. |
| 1967-12 |
Established Biei Shirado Industries Co., Ltd. (current consolidated subsidiary). |
| 1968-10 |
Established North Hokko Chemical Agriculture and Livestock Limited Company in Brazil (transferred management rights in 1976). |
| 1969-01 |
Relocated headquarters to Chuo Ward, Tokyo. |
| 1970-01 |
Established Takikawa Factory (now Hokkaido Factory) in Takikawa, Hokkaido, relocating from Tomorokoro-gun, Rubeshibe Town. |
| 1970-02 |
Constructed PVC Stabilizer DOTO Raw Material Synthesis Plant (current Synthesis No. 2 Plant) at Okayama Factory. |
| 1972-01 |
Established Fine Chemical Department (now Fine Chemical Business Group). |
| 1976 |
Started manufacturing Carbinol-based synthetic fragrance raw materials DMBC, DMBCA, etc. |
| 1982-03 |
Established Shizuoka Experimental Farm in Shirai, Aoi District, Shizuoka Prefecture (now Makinohara City). |
| 1984 |
Started sample testing of functional high polymer raw material PCST and its derivatives. |
| 1985-09 |
Established Hokkaido Experimental Farm in Nagareyama Town, Yubari District, Hokkaido. |
| 1985-11 |
Established Toyama Experimental Farm (closed in 2007). |
| 1987-05 |
Listed on the First Section of the Tokyo Stock Exchange. |
| 1988 |
Started sample testing of functional high polymer raw material PTBST. |
| 1989-07 |
Established Chemical Products Research Institute within the development research center premises. |
| 1989-09 |
Registered Helseed Hydrosol (co-developed with Ube Industries, Ltd.). |
| 1991-08 |
Established Hokuko Plastics Co., Ltd. (currently a consolidated subsidiary). |
| 1994-04 |
Registered Manage Hydrosol. |
| 1995-12 |
Completed ISO 9002 certification at three factories in Hokkaido, Niigata, and Okayama. |
| 1999-03 |
Obtained ISO 14001 certification at Niigata Factory. |
| 2000-01 |
Obtained ISO 14001 certification at Hokkaido and Okayama factories, completing certification at three factories. |
| 2001-01 |
Transitioned Okayama Factory's ISO 9002 to ISO 9001. |
| 2002-01 |
Transitioned Niigata Factory's ISO 9002 to ISO 9001. |
| 2002-08 |
Established Zhangjiagang Beixing Chemical Co., Ltd. in Jiangsu Province, China. |
| 2003 |
Launched raw materials for automotive exhaust gas purification catalysts (Intelligent Catalyst). |
| 2003-02 |
Transitioned Hokkaido Factory's ISO 9002 to ISO 9001. |
| 2004-10 |
Constructed a synthesis plant (currently the No. 1 Plant) at Zhangjiagang Beixing Chemical Co., Ltd. |
| 2006-04 |
Obtained OHSAS 18001 certification at three factories in Hokkaido, Niigata, and Okayama. |
| 2007-12 |
Obtained ISO 9001 and ISO 14001 certifications at Zhangjiagang Beixing Chemical Co., Ltd. |
| 2009-10 |
Construction of a new factory (second factory) at Jiaxing Beixing Chemical Co., Ltd. |
| 2009-12 |
Construction of a multi-purpose synthesis plant (Synthesis Factory No. 8) with a clean room at Okayama Factory. |
| 2012-07 |
Established a Munich office in Munich, Germany. |
| 2013-08 |
Winner agent registration. |
| 2015-01 |
Relocated the head office to Nihonbashi Honcho, Chuo-ku, Tokyo (registered the head office move in August). |
| 2016-05 |
Established HOKKO CHEMICAL AMERICA CORPORATION in North Carolina, USA (started operations in March 2017). |
| 2016-11 |
Constructed Niigata Factory Second Plant in Seiro Town, Kitakambara District, Niigata Prefecture. |
| 2019-01 |
Opened a test farm in Vietnam. |
| 2019-03 |
Acquired all shares of Murata Nagashi Co., Ltd. and made it a subsidiary. |
| 2019-11 |
Constructed a multi-purpose synthesis plant (Synthesis Factory No. 9) at Okayama Factory. |
| 2020-04 |
Transitioned OHSAS 18001 at Okayama Factory to ISO 45001. |
| 2020-09 |
Transitioned OHSAS 18001 at Hokkaido Factory to ISO 45001. |
| 2021-02 |
Transitioned OHSAS 18001 at Niigata Factory to ISO 45001. |
| 2022-04 |
Moved from the First Section of the Tokyo Stock Exchange to the Standard Market due to a review of market classification. |
| 2022-10 |
Constructed a weed control granule factory at Hokkaido Factory. |
