Overview

Riken Keiki Co., Ltd. is a Japanese manufacturer of industrial gas detection, alarm equipment, and analytical instruments, headquartered in Itabashi City, Tokyo. Founded in 1939, it has between 1,000 and 5,000 employees and is publicly listed on the Tokyo Stock Exchange under ticker 7734. Its products serve industries including semiconductor manufacturing, automotive, electronics, medical, and industrial equipment. In April 2026, the company reported that its gas detectors were selected for a project described as the world's first of its kind.

At a glance

What Riken Keiki Co., Ltd. makes

The company's products include fixed and portable gas detectors, gas analyzers, and environmental monitors, and it holds ISO 9001 certification.

Products and capabilities described on the company's own site include Emissions, Semiconductor, Sensor, Pump, Steel (source: rikenkeiki.co.jp).

Certifications

Riken Keiki Co., Ltd. is associated with the following certifications in public sources. Confirm the certified scope for the specific plant producing your part:

• ISO 9001 — rikenkeiki.co.jp

Latest developments

• 2026-10-13 — New Product | Product News | RIKEN KEIKI Co., Ltd. (rikenkeiki.co.jp)

• 2026-10-13 — Product News | RIKEN KEIKI Co., Ltd. (rikenkeiki.co.jp)

• 2026-09-07 — 製品トピックス | Product News | 理研計器株式会社 (rikenkeiki.co.jp)

• 2026-08-07 — Exhibition information at 『SEMICON INDIA 2026』 | Event | Product News | RIKEN KEIKI Co., Ltd. (rikenkeiki.co.jp)

• 2026-04-06 — Riken Keiki gas detectors selected for the world's first ... (rikenkeiki.co.jp)

• 2026-02-16 — Launch of GD-81D Series RIKEN KEIKI Co., Ltd. (Head Office: Itabashi-ku, Tokyo) is pleased to announce the launch of the "GD-81D Series," a fixed gas detector head designed for semiconductor manufacturing facilities. … | RIKEN KEIKI Co., Ltd. (linkedin.com)

Company details

Founded in 1939 and listed on the Tokyo Stock Exchange, the company operates in high-risk sectors such as semiconductors, petrochemicals, and power generation. Riken Keiki Co., Ltd. was founded in 1939, has an estimated 1,000-5,000 employees, and is headquartered in Itabashi City, Tokyo. On the LightSource stability read it is rated "Established & strong": 87 years in operation (founded 1939). Publicly listed; no distress event on record. Holds ISO 9001 certification(s) per public sources.

Frequently asked questions

What does Riken Keiki Co., Ltd. make?

Riken Keiki Co., Ltd. is a Japanese manufacturer of industrial gas detection, alarm equipment, and analytical instruments, headquartered in Itabashi City, Tokyo. Founded in 1939, it has between 1,000 and 5,000 employees and is publicly listed on the Tokyo Stock Exchange under ticker 7734. Its products serve industries including semiconductor manufacturing, automotive, electronics, medical, and industrial equipment. In April 2026, the company reported that its gas detectors were selected for a project described as the world's first of its kind.

Where is Riken Keiki Co., Ltd. headquartered?

Riken Keiki Co., Ltd. is headquartered in Itabashi City, Tokyo (6, Itabashi City, Tokyo, 174-0051).

When was Riken Keiki Co., Ltd. founded?

Riken Keiki Co., Ltd. was founded in 1939.

How big is Riken Keiki Co., Ltd.?

Riken Keiki Co., Ltd. has an estimated 1,000-5,000 employees, with revenue in the 346.0M range.

Is Riken Keiki Co., Ltd. publicly traded?

Publicly traded (JPX: 7734.T). Public financial figures are drawn from its filings.

What certifications does Riken Keiki Co., Ltd. hold?

Riken Keiki Co., Ltd. lists ISO 9001 on its website. Confirm the certified scope for the specific plant producing your part.

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Last verified Nov 2026. Is this your company? Request a correction.