Company History

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Aug. 2000

With the aim of promoting the Sabo soil-cement, INVAX was established in Kawagoe, Saitama Prefecture with the capital of 10 million yen.

Jul. 2001

The “SB wall construction method,” which is the construction method for check dams utilizing soil-cement, was jointly developed and commercialized for the first time in Japan with Nippon Steel Metal Products Co., Ltd. and Kyowa Concrete Industry Co., Ltd.
Our Capital increased to 31 million yen.

Jun. 2002

Acquired the Technology Inspection Certification for LUC-SB wall construction method. Created and issued a blending test manual for soil-cement for the first time in Japan.

Sep. 2002 

Our capital increased to 42 million yen.

Mar. 2003

Established LUC-SB Wall method research society (currently called as SB Wall construction method research society).

Jun. 2004

In collaboration with Kyoto Prefectural University, research was conducted on the durability of the LUC-SB Wall Method. Efforts were initiated to develop the INSEM-SB wall construction method, which primarily utilizes local soil and sand as its main materials.

Oct. 2004

Opened Kagoshima office in Aira, Kagoshima.

Feb. 2005

Acquired the Technology Inspection Certification for INSEM-SB wall construction method.

Jun. 2007

Conducted research on utilizing red soil in Okinawa as civil engineering materials with the Public Works Research Institute.

Jul. 2009

Started operating Japan’s first INSEM plant (automatic INSEM material making machinery). 

Jul. 2010

A function called “Insem-Piant Twin Hopper (improved version of INSEM plant machinery)” was added.

Oct. 2010

Opened blending test laboratory in Sakado, Saitama.

Dec. 2010

Published INSEM material adaptability test which is a simple blending test method of soil-cement.

Oct. 2011

Integrated Kagoshima office with the headquarter.

Mar. 2012

Installed a high performance compression test machinery to the blending test laboratory.

Apr. 2012

Initiated a research on utilizing iron and steel slag from steel works as requested by Nippon Steel Corporation.

Initiated research on utilizing steel slag to soil-cement in collaboration with Sabo & Landslide Technical Center and Kyoto University.

Jun. 2013

The headquarter was moved to 2-26-10 Haruoka, Minuma-ku, Saitama-shi, Saitama.

Integrated Sakado blending test laboratory to the headquarter and established a full-scale facility for the blending test.

Oct. 2013

Started a soil-cement quality management business. Introduced Japan’s first centralized plant in Aso, Kumamoto. Opened Kumamoto office in 437 Takehara, Aso-shi Kumamoto. Initiated research on utilization of fly ash to soil-cement in collaboration with Kyoto Prefecture University.

Jun. 2014 

Developed quality management cloud system.

Jun. 2015

Commercialized INSEM construction method quality management cloud system. 

Oct. 2015

Opend Hiroshima office at 1-11-33 Yagi, Asaminami-ku, Hiroshima-shi, Hiroshima. 

Mar. 2016

Started research on possibility of soil-cement technology adaptability to the field of rivers in collaboration with Chuo University Research and Engineering Research Institute.

Feb. 2017

Soil Technology Corporation was established as a subsidiary company of INVAX Corporation. Blending test business and quality management business were transferred to Soil Technology Corporation.

May. 2017

In collaboration with Saga University, research has commenced on the modification technique for dredged soil from tidal rivers which can be crushed and compacted. 

Oct. 2018

In collaboration with Saga University, research has commenced on the modification technique for dredged cohesive soil from tidal river. 

Jul. 2019 

Opened Hokkaido office at 1057-12 Kamiosatsu, Chitose-shi, Hokkaido.

Dec. 2019

Opened Shizuoka office at 587-4 Miyahara, Fujinomiya-shi, Shizuoka.

Sep. 2020

Hokkaido Soil Recycling Institute Corporation was established at 1057-10 Kamiosatsu, Chitose-shi, Hokkaido.

Hokkaido Soil Recycling Institute Corporation signed letter of intent for collaborative research with Hokkaido University, Research Faculty of Agriculture, Laboratory of Earth Surface Processes and Land Management.

Participated in “Technical Committee about rapid constructions by local soils” by Japan Society of Defense Facility Engineers.

Oct. 2020

Started preliminary test on “research and development of materials for civil engineering structure such as sabo facilities that are suitable for Hokkaido” at Hokkaido Soil Recycling Institute Corporation.

Mar. 2021

Our capital increased to 63.85 million yen after the capital entry of Tokyo Small and Medium Business Investment & Consultation CO., LTD.

Jun. 2021

Opened Hisatsu office at 1219-1 Toyonomachisubayashi, Uki-shi, Kumamoto.

Dec. 2022

The headquater moved to 23-1 Kakura, Iwatsuki-ku, Saitama-shi, Saitama.