Company Information
Corporate History
Okamoto was formed when Nippon Gum Industries and Riken Rubber merged with the core company of Okamoto Rubber Co., Ltd., and assumed its current form when Okamoto absorbed Zebra-Kenko Bicycles. Okamoto has grown since then by incorporating various companies and businesses into its group.
We intend to continue to grow constantly by combining the philosophies, culture, and manufacturing technologies of each company in the group.
Timeline of Corporate History
1932年
- December月
-
Minosuke Okamoto, his older sister, and his younger brother began conducting research on condoms made of natural rubber latex
1934年
- January月
-
Nippon Gum Industries, Ltd. established in Togoshi-cho, Ebara-ku, Tokyo
- February月
-
Okamoto Rubber Plant established in Azuma-machi, Mukojima-ku, Tokyo
1935年
- August月
-
Hirai Plant opened in Hirai, Edogawa-ku, Tokyo
1936年
- August月
-
Okamoto Rubber Plant incorporated as Kokusai Gomu Kogyo Kabushiki Kaisha
1937年
- June月
-
Riken Gomu Kogyo Kabushiki Kaisha established in Oji-ku, Tokyo
1943年
- July月
-
Ashikaga Plant opened in Ashikaga-shi, Tochigi Prefecture
1945年
- March月
-
Former Fukushima Plant opened in Takahagi-korojiri, Ogawa-machi, Iwaki-gun
1947年
- August月
-
Kokusai Gomu Kogyo Kabushiki Kaisha changed its trade name to Okamoto Rubber Co., Ltd.
1949年
- July月
-
Listed on the Tokyo Stock Exchange
- October月
-
Riken Gomu Kogyo Kabushiki Kaisha changed its trade name to Riken Rubber Co., Ltd.
1953年
- September月
-
Zebra-Kenko Bicycles Co., Ltd. established in Ginza, Chuo-ku, Tokyo
1958年
- February月
-
Riken Rubber Co., Ltd. and Nippon Gum Industries, Ltd. merged to become Nippon Riken Rubber Co., Ltd.
- August月
-
Osaka Sub-branch Office opened in Itoyamachi, Higashi-ku, Osaka
1961年
- June月
-
Nippon Riken Rubber Co., Ltd. headquarters relocated to Harukicho, Bunkyo-ku, Tokyo
- August月
-
Kanagawa Plant opened in Higashihara, Zama-shi, Kanagawa
- October月
-
Assigned to the First Section of the Tokyo Stock Exchange
1963年
- October月
-
Representative office opened in British Hong Kong
1964年
- April月
-
Gunma Plant opened in Uekinocho, Ota-shi
- May月
-
Ibaraki Plant opened in Itabashimachi, Ryugasaki-shi
1965年
- June月
-
Fukushima Plant opened in Akai, Taira-shi
1966年
- September月
-
Completed construction of headquarters building
1968年
- February月
-
Nippon Riken Rubber Co., Ltd. and Okamoto Rubber Co., Ltd. merged to become Okamoto Riken Rubber Co., Ltd.
1970年
- January月
-
Zebra Bicycles Co., Ltd. changed its trade name to Zebra-Kenko Bicycles Co., Ltd.
- April月
-
Listed in the First Section of the Osaka Securities Exchange
1974年
- January月
-
Established subsidiary O.M. Inc. in USA
1976年
- May月
-
Okamoto Riken Rubber Co., Ltd. absorbed Zebra-Kenko Bicycles Co., Ltd.
1981年
- February月
-
Established Okamoto Sewing Co., Ltd.
- October月
-
Fuyo Cycle Co., Ltd. acquired as a subsidiary, became Zebra Bicycles Co., Ltd.
1984年
- February月
-
50th anniversary of establishment
1985年
- April月
-
Opened Shizuoka Plant in Yoshida-cho, Haibara-gun
1985年
- October月
-
Okamoto Riken Rubber Co., Ltd. changed its trade name to Okamoto Industries, Inc.
1989年
- July月
-
Teamed with Michelin to establish the joint venture Michelin Okamoto Tire Corporation
1998年
- April月
-
Established subsidiary SIAM OKAMOTO Co., Ltd. in Thailand
1999年
- August月
-
Established subsidiary APOLLOTEX Co., Ltd. in Thailand
2000年
- March月
-
Dissolved business association with Michelin, transferred joint venture
- April月
-
Acquired Hillson-Dec Co., Ltd. as a subsidiary
2001年
- March月
-
Acquired Union Royal Co., Ltd. as a subsidiary
2002年
- August月
-
Acquired laminate film business
2004年
- April月
-
Acquired dehumidifier (“Mizutori-zosan”) business
- May月
-
Established subsidiary OKAMOTO RUBBER PRODUCTS Co., Ltd. in Thailand
- August月
-
Established subsidiary OKAMOTO VIETNAM Co., Ltd. in Vietnam
- September月
-
Acquired Secaicho Co., Ltd. as a subsidiary
- December月
-
Acquired decorative films business
2005年
- March月
-
Acquired Ichijiku Pharmaceutical Co., Ltd. as a subsidiary
- June月
-
Acquired laminate film (“allomer film”) business
2006年
- March月
-
Acquired cockroach insecticide (“INPYRETH”) business
- August月
-
Opened Joso Distribution Center in Joso-shi, Ibaraki Prefecture
- November月
-
Established subsidiary Okamoto Industries (Shenzhen) Co., Ltd. in China
2007年
- April月
-
Acquired dehydrant/absorbent sheet for food products (“Pichitto”) business via transfer
- May月
-
Established subsidiary VINA OKAMOTO Co., Ltd. in Vietnam
- July月
-
Established subsidiary OKAMOTO SANDUSKY Manufacturing L.L.C. in USA
2009年
- November月
-
Opened Ushiku Distribution Center in Ushiku-shi, Ibaraki Prefecture
2010年
- October月
-
Secaicho Co., Ltd. and Union Royal Co., Ltd. merged to become Secaicho Union Corporation
2012年
- January月
-
Opened Okayama Distribution Center in Nagi-cho, Katsuta-gun, Okayama Prefecture
- April月
-
Acquired Funabori Rubber Co., Ltd. as a subsidiary
2013年
- February月
-
Established subsidiary Okamoto Manufacturing（GD）Ltd. in China
- June月
-
Okamoto Sewing Co., Ltd. changed its trade name to Shoe Tech Okamoto Co., Ltd.
- October月
-
Commenced business of solar power generation for selling power
2014年
- February月
-
80th anniversary of establishment
2017年
- September月
-
Acquired Riken Corundum Co., Ltd. as a subsidiary
2019年
- February月
-
85th anniversary of establishment