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Established: September 15, 1955 (Showa 30).
Headquarters moved to Chiyoda-ku, Tokyo.
Established a technology research institute in Setagaya-ku, Tokyo.
Capital increased to 30 million yen.
Capital increased to 70 million yen.
Headquarters moved to Shibuya-ku, Tokyo.
Established a new Takasago branch factory in Sakata City, Yamagata Prefecture.
Integrated related divisions of Teikoku Oil Co., Ltd. and Petroleum Resources Development Co., Ltd., and renamed the company to 'Ternight Co., Ltd.' Capital increased to 98 million yen.
Moved the technology research institute to Sakata City, Yamagata Prefecture.
Entered into a business partnership with NL Baroid Corp. (now Haribarton Corp.) in the United States.
Completion of new construction and expansion of the technology research institute, factory office, second factory, and other related facilities.
Opened Osaka branch office (now West Japan Sales Office)
Renamed Osaka branch office to Sales Office
Completion of new construction of Takasago sub-plant warehouse and office
Established related company Environmental Techno Service Co., Ltd. to carry out construction waste improvement projects
Renamed Osaka Sales Office to West Japan Sales Office
Relocated headquarters to 3-29, Kanda-Jimbocho 3-chome, Chiyoda-ku, Tokyo, Joint Building Kanda-Jimbocho 3-chome
Relocated headquarters to 3-2-3, Kanda-Jimbocho 3-chome, Chiyoda-ku, Tokyo, Kanda-Jimbocho Place (now Daiwa Kanda-Jimbocho 3-chome Building)
Published financial statements for the 71st fiscal year (ending March 2026)
NEWS
Telnite Co., Ltd. marked its 70th anniversary on September 15, 2025, and expressed its gratitude to customers and other stakeholders. The company also reflected on its history as a comprehensive drilling fluid technology company and reaffirmed its commitment to providing products and services in the future.
Effective April 1, 2024, Telnite Co., Ltd. changed the names of several organizational units. The Technical Department became the Drilling Fluid Technology Department, and the Sales Department became the Civil Engineering and Environmental Sales Department. The Technical Development Section was discontinued and integrated into the Technical Research Institute.
Today, Ternight Corporation's corporate website has been completely renewed. The structure and design have been refreshed to improve ease of information search. It has also been optimized for smartphones and tablets, allowing viewing from various devices.
Ternaite Co., Ltd. is Japan's only comprehensive mud and water technology company, providing better products and engineering through drilling and civil engineering. We also promote environmentally conscious resource recycling and aim to contribute to building a prosperous society.
To prevent the spread of the novel coronavirus and ensure employee safety, we recommend work-from-home and staggered working hours for employees who can work from home. This will be implemented for all business locations and all employees from August 3, 2020, and the end date will be announced later. For inquiries, please contact the relevant person via email, mobile phone, fax, or the designated email address.
We will lift the home quarantine that was implemented to prevent the spread of the novel coronavirus on June 22, 2020. All offices, including the headquarters, the West Japan sales office, and the Koshigaya testing laboratory, will resume normal work, and staggered commuting will be possible to ease congestion. We will continue to respond with the safety of employees and customers as our top priority.
Starting from May 27, 2020, employees will implement a 3-day workweek, with the remaining 2 days working remotely. To reduce commuting congestion, staggered commuting hours are available. Following the lifting of the state of emergency nationwide, part of the home quarantine has been lifted. For inquiries, please contact us via email at [email protected].
Ternight Corporation announces that, to prevent the spread of the novel coronavirus infection and ensure the safety of employees, they will implement home quarantine. The home quarantine will be carried out at the headquarters, West Japan sales office, and Koshigaya testing laboratory, primarily through telework. The implementation period starts from April 7, 2020, and the end date will be notified separately.
On November 7, 2019, we exhibited a booth at 'Good Well Day 2019 in Shikoku' held at the Crown Palace Shin Hankyu Kochi in Kochi City. As a specialized manufacturer of drilling mud for well drilling and an engineering company providing technical services, we exchanged opinions with visitors.
On October 26 and 27, we exhibited at Sakata Industrial Fair 2019, held at Kokutai Memorial Gymnasium in Sakata City, Yamagata Prefecture. Many visitors stopped by our booth, making it a valuable opportunity to introduce our mud-related technologies to the local community.