Message

Masayuki Sato, President and Representative Director

Ever since our founding in 1970, Tenox Corporation has established the “Tenox Brand” in foundation work. Our brand is built on the trust of customers and society. I would like to express my deepest gratitude for your patronage.

Under the previous Medium-Term Management Plan (FY2021 to FY2023), the Company was engaged in efforts to create high added value to address social needs. As such, our slogan was “enterprising spirit” and our initiatives were centered on three basic strategies—development, sales & construction, and ESG.

In terms of “development,” we engineered two new construction methods with their practical application in sight for the current fiscal year. As for “sales & construction,” we took on foundation construction for redundancy projects, and we will continue contributing to national resilience going forward.

In regard to ESG, we are involved in efforts to provide solutions for social challenges, such as climate change, and the securement and development of human resources. This fiscal year, we established the Sustainability Committee, and we will contribute to the development of a sustainable society through our business activities, while at the same time, achieve the sustainable growth of the Company and the medium- to long-term enhancement of corporate value.

We will continually keep gratitude in our hearts and fulfill our social responsibility as a sustainable company so that we may meet the expectations of all of our stakeholders.

I look forward to your continued support and patronage.

Masayuki Sato, President and Representative Director

Management Philosophy

The Company’s business purpose (mission) is to deliver peace of mind and safety to all people who use construction and civil engineering structures.
Therefore, in order to proceed with our work, we require trust from of all our stakeholders, customers, suppliers, cooperating companies, shareholders, and employees.
Society is constantly changing. The Company must actively respond to such changes and constantly provide new products and services. Technical certifications are held by more than 100 employees at the Company. As a technically proficient group, we will constantly embrace the challenge of expectations from society.

Company Profile

Corporate Name
TENOX CORPORATION
Established
July 8, 1970
Paid-in capital
¥1,710,900,000
Head Office Address
Huric Mita Bldg., 5-25-11 Shiba, Minato-ku, Tokyo 108-8380
TEL / FAX
03-3455-7790 03-3455-7683
Representative
Sunao Wakao, President and Representative Director
Business Activities
Sales of concrete piles and steel pipe piles; contracting for pile
driving construction and contracting for ground improvement construction
Construction License
Scaffolding and Earthwork business : Minister of Land, Infrastructure, Transport and Tourism (General-2) No.13763
Civil Engineering : Business Minister of Land, Infrastructure, Transport and Tourism (Special-2) No.13763
Paving business : Minister of Land, Infrastructure, Transport and Tourism (Special-2) No.13763
Landscaping and Gardening business : Minister of Land,Infrastructure, Transport and Tourism (Special-2) No.13763
No. of Employees
Employees 335 (consolidated; as of March 31, 2024)
Net Sales
Over ¥20,207 million (consolidated; for the fiscal year ended March 31, 2024)
Main Banks
Mizuho Bank (Akasaka Branch)
Sumitomo Mitsui Banking Corporation (Marunouchi Branch)
Sumitomo Mitsui Trust Bank (Shiba Sales Department)

List of officers

President and Representative Director Sunao Wakao Sales General Manager
Director and Managing Executive Officer Takashi Horikiri Management General Manager
Director Executive Officer Katsunori Takahashi Special Appointive Officer to the President
Director Executive Officer Katsuhisa Kodama Sales Deputy General Manager
Director Executive Officer Naoya Matayoshi Construction General Manager
Outside Director Full-time Audit and Supervisory Committee Member Toshiyuki Mizui
Outside Director Audit and Supervisory Committee Member Miki Suzuki
Outside Director Audit and Supervisory Committee Member Tomokazu Kubo
Executive Officer Yuji Hirayama Technology General Manager
Executive Officer Toru Kurokawa Construction Deputy General Manager and Construction First Division Manager
Executive Officer Atsushi Taniyama Management Deputy General Manager and Accounting Manager
Executive Officer Masaya Sano Planning Manager

History

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1970〜1980
07.1970
Established Tenox Corporation in Minato Ward, Tokyo. Started sales and construction of concrete piles as an agent of Asahi Kasei Corporation.
10.1976
Entered into a basic contract as a dealer of Asahi Kasei Construction Materials Corporation.
02.1977
Obtained a patent for the construction method of ready-made piles (inner excavation method).
07.1977
Opened the Nagoya Sales Office in Nagoya City, Aichi Prefecture in order to expand sales in the Chubu region.
03.1980
Partnered with Shin-Nippon Seitetsu Co., Ltd. (currently Nippon Steel Corporation) for research and development of vibration-low and noise-low pile foundation methods using steel pipe piles and steel pipe sheet piles.
05.1980
Acquired certification from the Minister of Construction for the CMJ construction method that was jointly researched and developed with Asahi Kasei Construction Materials Corporation.
1981〜1990
10.1983
Formed a research and development partnership with Sumitomo Cement Co., Ltd. (currently Sumitomo Osaka Cement Co., Ltd.) to use the soft ground hardening material in a low-rise building foundation method utilizing the Tenocolumn method.
03.1984
Obtained a patent for the Tenocolumn method.
05.1985
Acquired certification from the Minister of Construction for the TN method that was jointly researched and developed together with Shin-Nippon Seitetsu Co., Ltd. (currently Nippon Steel Corporation).
08.1985
Opened the Shonan Equipment Center in Higashi Katsushika County, Chiba Prefecture.
07.1986
Opened the Funabashi Equipment Center in Funabashi City, Chiba Prefecture.
05.1987
Opened the Osaka Sales Office in Osaka City, Osaka Prefecture to expand sales in the Kansai region.
12.1987
Established Tenox Kyushu Corporation and opened the Kyushu Sales Office in Omuta City, Fukuoka Prefecture in order to expand sales in the Kyushu region and to improve the construction system.
08.1988
Partnered with Misawa Homes Co., Ltd. to acquire certification from the Minister of Construction for detached house soil improvement based on the Tenocolumn method, and to conduct research and development aimed at practical application.
11.1988
Opened the Hokuriku Sales Office in Kanazawa City, Ishikawa Prefecture to expand sales in the Hokuriku region.
02.1989
Opened the Chushikoku Sales Office in Hiroshima City, Hiroshima Prefecture to expand sales in the Chugoku region and in Shikoku.
07.1989
Opened the Tohoku Sales Office in Sendai City, Miyagi Prefecture to expand sales in the Tohoku region.
09.1989
Together with Misawa Homes Co., Ltd., acquired certification from the Minister of Construction for detached house soil improvement based on Tenocolumn method.
12.1990
Opened the Hokkaido Sales Office in Sapporo City, Hokkaido Prefecture to expand sales in the Hokkaido region.
1991〜2000
05.1991
Partnered with the Railway Technical Research Institute (currently a public interest incorporated foundation) to research and develop an existing embankment reinforcement method (radish anchor method) for agitated mixing piles.
06.1991
Partnered with Saga University for research and development of a lightweight soil method.
11.1991
Performed over-the-counter registration of shares with Japan Securities Dealers Association.
02.1993
Acquired certification from the Minister of Construction for super-large diameter piles in the CMJ method.
03.1995
Moved the head office moved to the Akasaka neighborhood of Minato Ward, Tokyo.
Acquired technology review and certification for the Gantetsu Pile method through the General Civil Engineering Method/Technology Review and Certification Project operated by the Japan Institute of Country-ology and Engineering.
11.1997
Acquired technology review and certification for the radish anchor (large diameter rod reinforcement) construction method through the Advanced Construction Engineering Method/Technology Review and Certification Project operated by the Advanced Construction Technology Center.
5.1998
Acquired certification from the Minister of Construction for the Gantetsu Pile method in regards to allowable bearing capacity as foundation pile. Acquired technology review and certification for the Tenocolumn (deep mixing) construction method through the Advanced Construction Engineering Method/Technology Review and Certification Project operated by the Advanced Construction Technology Center.
10.1998
Integrated the Shonan Equipment Center and the Funabashi Equipment Center and reopened the former Funabashi Equipment Center as the Tokyo Equipment Center.
2001〜2010
07.2002
Acquired certification from the Minister of Land, Infrastructure, Transport and Tourism for the ATTcolumn.
07.2003
Acquired additional certification from the Minister of Land, Infrastructure, Transport and Tourism for increasing the diameter of the ATTcolumn.
12.2004
Canceled over-the-counter registration with the Japan Securities Dealers Association and listed shares on the JASDAQ Securities Exchange.
06.2005
Acquired certification from the Minister of Land, Infrastructure, Transport and Tourism for the TN-X construction method.
12.2005
Sold shares of THAI TENOX CO., LTD .as part of business restructuring and made the company into a non-consolidated subsidiary.
02.2010
Acquired construction technology performance certification for the Pure Pile method.
2011〜2020
12.2011
Moved the head office to the Shiba neighborhood of Minato Ward, Tokyo.
02.2012
Acquired construction technology performance certification for the Pure Pile method II.
04.2013
Closed the Akita Branch Office and opened the North Tohoku Branch Office in Morioka City, Iwate Prefecture.
04.2015
Opened the Koriyama Branch Office in Koriyama City, Fukushima Prefecture.
09.2015
Established TENOX ASIA COMPANY LIMITED in Ho Chi Minh City, Socialist Republic of Vietnam.
08.2018
Acquired technical certification for the Tenocolumn method in Vietnam.
2021〜
04.2022
Listed on the Standard Market of the Tokyo Stock Exchange.

Organization chart

Business information

Construction Business

The four companies Tenox Corporation , Tenox Giken Co., Ltd. , Hiroshimagumi Co.,Ltd. and OHMISHIMA BUSSAN CO.,Ltd are engaged in a construction business that specializes in foundation construction. For Tenox Corporation, Tenox Giken mainly provides Tenox with Foundation construction contract and equipment rentals. Overseas, the business is operated by TENOX ASIA COMPANY LIMITED.

General Civil Engineering Consulting Business

The Integrated Geotechnology Institute Limited operates business related to general civil engineering consulting and a mediation business for construction work.

Other businesses

We are engaged in real estate rental business, etc.