The late former advisor and honorary chairman Jun Kajiama commenced operations in Higashi-Odai, Shinagawa-ku, Tokyo.
Since launching the Oval flow meter, Japan's first volumetric flow meter, in 1949 (Showa 24), we have been a pioneer in flow meters, offering fluid measurement instruments, electronic instruments, peripheral and related equipment, system equipment, and calibration services.
Founded on May 10, 1949 (Showa 24).
Obtained manufacturing permission for gas meters, becoming Japan's first measuring instrument manufacturing facility with licenses for four types of meters: gas, water, gasoline, and oil.
With the opening of the Tokyo Stock Exchange Second Section, the company listed its shares.
The Yamanashi factory in Nirasaki City, Yamanashi Prefecture, was completed and began operations.
Opened a Yokohama office in the Rinkai Industrial Complex, Kanazawa-ku, Yokohama.
Japan Emerson Corporation became the lead shareholder, raising capital to 2.2 billion yen.
Signed a technology introduction agreement with U.S. MICROMOTION for the manufacture of mass flow meters based on the principle of Coriolis force.
Japan Emerson Co., Ltd. (a subsidiary of the U.S. Emerson Electric Co.) became our largest shareholder, and the capital increased to 2.2 billion yen.
Established the subsidiary Oval Singapore Co., Ltd. in Singapore.
Changed the company name from Oval Equipment Industry Co., Ltd. to Oval Co., Ltd.
Established a subsidiary, Yang Yi Instrumentation Co., Ltd., in Taiwan.
Renamed Oval Singapore Co., Ltd. to Oval Asia Pacific Co., Ltd. to expand operations.
The Yokohama office obtained ISO 9001 certification for its quality management system.
Our main factory, the Yokohama plant, obtained ISO 9001 certification for quality management systems.
Opened a Beijing office in Beijing, China.
Established a joint venture, Hefei Oval Instruments Co., Ltd., in China.
Renamed Yang Yi Instrumentation Co., Ltd. to Taiwan Oval Co., Ltd.
Established a joint venture, Shanghai Oval Ltd., in China.
Merged five subsidiaries and established Oval Tech Co., Ltd.
Acquired treasury shares from Emerson Japan Co., Ltd., the principal shareholder, thereby terminating the capital relationship with the company.
Established a subsidiary, Oval Europe Co., Ltd., in the Netherlands.
Merged our Yamanashi factory with Toyo Seiki Co., Ltd. and established Yamanashi Oval Co., Ltd.
Established a subsidiary, Oval Gas Engineering Korea Co., Ltd., in South Korea.
To improve operational efficiency, absorbed and merged the subsidiary Oval Tech Co., Ltd. into the company.
Headquarters obtained ISO 9001 certification for quality management systems.
The headquarters obtained ISO 9001 certification for quality management systems.
Yokohama branch obtained ISO 14001 certification for environmental management systems.
Our main factory, the Yokohama plant, obtained ISO 14001 certification for environmental management systems.
Obtained registration under the Metrology Calibration Business Registration System (JCSS).
Obtained registration under the JCSS (Japanese Calibration Service System) for calibration service providers.
Renamed Oval Gas Engineering Korea Co., Ltd. to Oval Engineering Co., Ltd.
Established Miyazaki Oval Co., Ltd. as a joint venture with Yoshikawa Electric Co., Ltd. to consolidate the manufacturing of electrical instruments and converters.
Signed a business and capital partnership agreement with Tokyo Keiki Co., Ltd., and on December 1 of the same year, assigned and transferred 1,309,000 shares of the company to them.
Established Hefei Oval Automation Control Systems Co., Ltd. in China.
Headquarters obtained ISO 14001 certification for environmental management systems.
Signed a four-party business partnership agreement with Tokyo Keiki Co., Ltd., Nagano Keiki Co., Ltd., and Chino Co., Ltd. to explore overseas water markets.
Selected as a listed stock by the Tokyo Stock Exchange.
Reduced the share unit from 1,000 to 100 shares to improve liquidity and broaden the investor base.
Designated as a First Section listing on the Tokyo Stock Exchange.
Transitioned to a company with an Audit Committee.
Established OVAL Corporation of America in the United States.
Headquarters and Yokohama branch obtained ISO 27001 certification for information security management systems.
Acquired additional shares of Miyazaki Oval Co., Ltd., making it a wholly-owned subsidiary.
Transitioned to the Tokyo Stock Exchange Prime market.
Acquired all shares of Keihin Measurement Co., Ltd., making it a wholly-owned subsidiary.
Transitioned to the Tokyo Stock Exchange Standard market.
Starting from the early morning of November 13, 2026 (Japan time), a major connectivity outage has occurred across various Microsoft 365 services, which may result in emails and other inquiries not being received. We deeply apologize for the inconvenience caused and will report again as soon as the service is restored.
Oval Corporation will exhibit at the Thailand Trade Show "METALEX 2026", which will be held from November 18 to 21, 2026, at the Bangkok International Trade Exhibition Center (BITEC). The event runs from 10:00 to 18:00 on Wednesday, November 18, until Saturday, November 21, and admission is free. Prior registration is required and can be completed through the official website.
Oval Corporation’s Singapore‑based consolidated subsidiary, OVAL ASIA PACIFIC PTE. LTD., will exhibit at the "2026 OEEG Global Marine Energy & Marine Engineering Equipment Industry Chain Exhibition" held at the Shanghai Expo Exhibition Hall in Shanghai, China, from Wednesday, November 17 to Thursday, November 19, 2026. The exhibition runs from November 17 to 19, with the final day open from 09:00 to 15:00. Admission is free for a limited period and requires pre‑registration.
On Wednesday, December 9, and Friday, December 11, a seminar for individual investors will be held, sponsored by the Japan Securities Newspaper Company. President and CEO Tanihata will explain the business and management strategy, and a stock lecture is also scheduled.
On Wednesday, November 25, 2026, a seminar for individual investors will be held at Osaka Asahi Life Hall, hosted by the Japan Securities Newspaper Company, where Jun Tanimoto, President and CEO of Oval, will explain the company's business and management strategy. The seminar will open at 1:00 p.m., and from 2:00 p.m. to 2:50 p.m. Oval will give a company presentation, with Picté Japan also participating. Admission requires a ticket, and applications can be made through the Japan Securities Newspaper Company's website.
Oval Co., Ltd. exhibited at the Measurement Expo NEXT2026 held at Grand Cube Osaka from October 21 to 23, 2026. Many visitors came to our booth, and we express our gratitude. We plan to continue introducing useful products through exhibitions and email newsletters.
We have newly launched a dedicated web page for our Coriolis flow meter, the ALTImassⅡPLUS. It provides a concise introduction of the product features and main specifications. We will continue to enrich product information. Please view it via the link.
We announced that the website, which had been temporarily suspended due to maintenance, has been restored and is now available for use as usual. We apologized for the inconvenience and trouble during the suspension period and pledged to continue providing stable services in the future.
Oval Corporation will exhibit at Measurement Expo NEXT 2026, which will be held from October 21, 2026. The venue is Grand Cube Osaka, and the exhibition booth is No.17. Admission is free and requires pre-registration. We look forward to your visit.
Oval Corporation exhibited at 'IINTERMEASURE2026' held at Tokyo Big Sight from September 16 to 18, 2026, and expressed gratitude to many visitors. We plan to continue introducing our products through exhibitions and email newsletters.