• April 1950
    Founded by Heihachiro Takemoto
  • April 1955
    Reorganized into a corporation Innosho Ringyo Co., Ltd. established
  • November 1965
    Opened Lumber Super Okayama in Itami City, Hyogo Prefecture
  • July 1971
    Construction material center opened in Kobe, Tsuyama city
  • March 1977
    Established Kagamino Factory in Kagamino-cho, Tomata-gun
  • October 1980
    Head office factory expansion
  • March 1981
    Appointed Naoyuki Mamehara, former president
  • February 1982
    Introduced a low-temperature dehumidifying dryer at the main factory (first in Japan)
  • June 1982
    Added laminated lumber line at Kagamino factory
  • September 1986
    Awarded by the Minister of Agriculture, Forestry and Fisheries
  • April 1990
    Designated as Japan's first AQ-certified factory for coniferous dry processing materials for construction use by the Japan Housing and Wood Technology Center.
  • May 1991
    Installed a biomass boiler at the head office sawmill
  • July 1991
    Completion of head office building (now 22 Ninomiya, Tsuyama City)
  • November 1992
    Won the first Emperor's Cup for domestic lumber in the forestry category of the 31st National Festival of Agriculture, Forestry and Fisheries.
  • April 1993
    The former president has an audience with the Emperor and Empress at the Imperial Palace.
  • May 1993
    Installed an unmanned, ultra-high-performance twin band saw in Japan at the head office lumber section 2 factory
  • January 1995
    Established a new pre-cut factory in Kobe, Tsuyama City
  • October 1996
    Established Shimizu Factory (laminated wood) in Shimizu Ward, Shizuoka City, Shizuoka Prefecture (former Shimizu City)
  • December 1996
    Established a metal precut factory in Kobe, Tsuyama City.
  • December 1999
    Shimizu Factory became the first domestic laminated lumber manufacturer to receive ISO9001 certification
  • February 2001
    Kume (Lumber) Factory completed in Kume Industrial Complex in Kume, Tsuyama City (former Kume-machi, Kume-gun)
  • January 2005
    Tokyo Logistic Co., Ltd. Fujinomiya Factory completed
  • August 2006
    Innosho Forestry Co., Ltd. Kume factory completed
  • January 2007
    ISO14001 Certified
  • April 2008
    Established Innosho Forestry Housing Co., Ltd.
  • February 2009
    Innosho Forestry Co., Ltd. Kume factory installed additional solar panels
  • July 2010
    Consolidated Shimizu Factory into Kume Factory of Innosho Forestry Co., Ltd.
  • January 2012
    Merged with Tokyo Logistic Co., Ltd.
  • April 2012
    Tetsuro Takemoto appointed as Representative Director
  • January 2016
    Merged with Innosho Forestry Co., Ltd.