Verified Nov 2026
Batteries & E-Mobility
·
Chuo, Tokyo
·
Since 1935
Tosoh Corporation is a Japanese chemical and specialty materials company headquartered in Chuo, Tokyo, founded in 1935. It is publicly listed on the Tokyo Stock Exchange (ticker 4042.T) and employs between 10,000 and 50,000 people. Its business spans basic and specialty chemicals, battery materials for e-mobility, and bioscience products, serving the automotive, electronics, construction, medical, and industrial equipment sectors. Its recent developments include a planned share buyback of 12,000,000 shares and the announced move to take full control of a polyurethane monomer producer.
Tosoh Corporation at a glance
Revenue
6.4B
Employees
10,000-50,000
Founded
1935
Headquarters
Chuo, Tokyo
Ownership
Publicly traded (JPX: 4042.T)
Certifications
ISO 13485 · ISO 14001 · ISO 9001
Industries
Automotive
Electric Vehicles
Electronics
Construction
Medical
Industrial Equipment
STABILITY SIGNALS
Established & strong
91 years in operation (founded 1935).
Publicly listed; no distress event on record.
Holds ISO 13485, ISO 14001, ISO 9001 certification(s) per public sources.
Overview
Tosoh Corporation is a Japanese chemical and specialty materials company headquartered in Chuo, Tokyo, founded in 1935. It is publicly listed on the Tokyo Stock Exchange (ticker 4042.T) and employs between 10,000 and 50,000 people. Its business spans basic and specialty chemicals, battery materials for e-mobility, and bioscience products, serving the automotive, electronics, construction, medical, and industrial equipment sectors. Its recent developments include a planned share buyback of 12,000,000 shares and the announced move to take full control of a polyurethane monomer producer.
At a glance
Attribute | Detail |
|---|---|
Founded | 1935 |
Headquarters | Chuo, Tokyo |
Employees | 10,000-50,000 |
Revenue | 6.4B |
Ownership | Publicly traded (JPX: 4042.T) |
Primary capability | Batteries & E-Mobility |
Certifications | ISO 13485 · ISO 14001 · ISO 9001 |
What Tosoh Corporation makes
Tosoh holds ISO 9001, ISO 14001, and ISO 13485 certifications and lists battery, electronics, semiconductor, rubber, glass, coating, adhesive, and mold products among its offerings.
Products and capabilities described on the company's own site include Mold, Battery, Electronics, Semiconductor, Rubber, Glass, Coating, Adhesive (source: tosoh.com).
Certifications
Tosoh Corporation is associated with the following certifications in public sources. Confirm the certified scope for the specific plant producing your part:
ISO 13485 — tosohbioscience.com
ISO 14001 — tosohbioscience.com
ISO 9001 — tosohbioscience.com
Latest developments
2026-11-05 — Tosoh Corporation announces an Equity Buyback for 12,000,000 shares, for ¥25,000 million. | MarketScreener Hong Kong (marketscreener.com)
2026-10-14 — Tosoh to take full control of PU monomer producer | European Rubber Journal (european-rubber-journal.com)
2026-08-04 — News Result | https://www.tosoh.com/ (tosoh.com)
2025-12-22 — 2025 | https://www.tosoh.com/ (tosoh.com)
2025-06-24 — Kinaxis and Tosoh Corporation Formulate an AI-Powered Su (kinaxis.com)
2025-06-13 — Tosoh to construct new chloroprene rubber plant in Japan - Chemical Engineering | Page 1 (chemengonline.com)
Facilities
Tosoh Corporation is headquartered in Chuo, Tokyo. Public sources also reference these locations:
Japan — chemengonline.com
Company details
Tosoh is publicly traded on the Tokyo Stock Exchange and reports four main business segments: Petrochemical, Chlor-Alkali, Specialty, and Engineering. Tosoh Corporation was founded in 1935, has an estimated 10,000-50,000 employees, and is headquartered in Chuo, Tokyo. On the LightSource stability read it is rated "Established & strong": 91 years in operation (founded 1935). Publicly listed; no distress event on record. Holds ISO 13485, ISO 14001, ISO 9001 certification(s) per public sources.
Frequently asked questions
What does Tosoh Corporation make?
Tosoh Corporation is a Japanese chemical and specialty materials company headquartered in Chuo, Tokyo, founded in 1935. It is publicly listed on the Tokyo Stock Exchange (ticker 4042.T) and employs between 10,000 and 50,000 people. Its business spans basic and specialty chemicals, battery materials for e-mobility, and bioscience products, serving the automotive, electronics, construction, medical, and industrial equipment sectors. Its recent developments include a planned share buyback of 12,000,000 shares and the announced move to take full control of a polyurethane monomer producer.
Where is Tosoh Corporation headquartered?
Tosoh Corporation is headquartered in Chuo, Tokyo.
When was Tosoh Corporation founded?
Tosoh Corporation was founded in 1935.
How big is Tosoh Corporation?
Tosoh Corporation has an estimated 10,000-50,000 employees, with revenue in the 6.4B range.
Is Tosoh Corporation publicly traded?
Publicly traded (JPX: 4042.T). Public financial figures are drawn from its filings.
What certifications does Tosoh Corporation hold?
Tosoh Corporation lists ISO 13485 · ISO 14001 · 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.
Location & contact
Phone
+81 35-427-5118
Certification
ISO 13485 · ISO 14001 · ISO 9001
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