1940’s
- 1949Established Riken Vitamin Oil Co., Ltd. With the functions of the Vitamin A Department from Riken Eiyou Yakuhin Co., Ltd.
1950’s
- 1953Relocated Tokyo Factory from Koto-ku to Itabashi-ku.
- 1959Acquired Kenseido Co., Ltd.
1960’s
- 1960Riken Oil Industry Co., Ltd. established a factory in Osaka (current Osaka Factory of Riken Vitamin).
- 1961Listed on the Second Section of the Tokyo Stock Exchange.
- 1963Merged with Riken Oil Industry Co., Ltd.
- 1964Established Riken Food Co., Ltd.
- 1968Established the Soka Factory.
1970’s
- 1973Established the Chiba Factory.
1980’s
- 1980Changed the corporate name to Riken Vitamin Co., Ltd.
- 1985Established the Kyoto Factory.
1990’s
- 1991Established Rikevita (Malaysia) Sdn. Bhd.
Established Sunny Packaging Co., Ltd.
- 1993Established Tianjin rikevita Food Co., Ltd.
- 1994Established Rikevita (Singapore) Pte Ltd.
- 1996Acquired Eiken Shoji Co., Ltd.
- 1999Opened an Application Center for food improving agents at the Soka Factory.
2000’s
- 2000Opened the Presentation Center.
Rikevita (Malaysia) Sdn. Bhd. opened an Application Center for food improving agents.
Tianjin rikevita Food Co., Ltd. opened an Application Center for food improving agents.
- 2003Established Riken Vitamin Europe GmbH.
- 2004Established Guymon Extracts Inc.
Established Riken Vitamin USA, Inc.
- 2005Established Rikevita Fine Chemical & Food Industry (Shanghai) Co., Ltd.
- 2006Established Rikevita Asia Co., Ltd.
- 2007Relocated the Application Center for food improving agents from Rikevita (Malaysia) Sdn. Bhd. to Rikevita (Singapore) Pte Ltd.
2010’s
- 2011Relocated the Application Center for food improving agents from the Tianjin rikevita Food Co., Ltd. to Rikevita Fine Chemical & Food Industry (Shanghai) Co., Ltd.
- 2012Opened an Application Center for chemical improving agents at Tianjin rikevita Food Co., Ltd.
- 2013Established Rikevita (India) Private Limited.
- 2014Listed on the First Section of the Tokyo Stock Exchange.
- 2015Established Rikevita Turkey Food Industry Limited Company.
- 2017Riken Food Co., Ltd. opened the Yuriage Factory.
- 2019Relocated the Application Center for chemical improving agents as the Fine Chemical Technical Center from the Tianjin rikevita Food Co., Ltd. to Rikevita Fine Chemical & Food Industry (Shanghai) Co., Ltd.
Opened the Application & Innovation Center for food improving agents at the Chiba Factory.
2020’s
- 2020Relocated Head Office from Chiyoda-ku to Shinjuku-ku.
- 2021Riken Food Co., Ltd. opened the Rikuzentakata Base.
- 2024Opened an Application Center for food improving agents at Riken Vitamin USA, Inc.