Private company

Tokuyama Corporation

Logo: Tokuyama Corporation, Public domain, via Wikimedia Commons5

Japanese chemical company

Tokuyama Corporation (株式会社トクヤマ, Kabushiki-gaisha Tokuyama) is a Japanese, Tokyo-based chemical company and the world's fourth largest silicon manufacturer. The company was founded as Nihon Soda Kogyo Co., Ltd., a producer of soda ash in 1918 by Katsujiro Iwai. It changed name in 1936 to Tokuyama Soda Co., Ltd. and in 1994 to its present name.3 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

1918Founded1
  • Industrychemical industry1
  • HeadquartersTokyo1
  • Websitewww.tokuyama.co.jp/eng
  • Legal formkabushiki gaisha1
  • Business addressFront Place Akihabara,, 7-5, Sotokanda 1-Chome, Chiyoda-Ku,, Tokyo, M0 101-86186
  • LEI529900MHGZKHNMNCQB624
  • StatusActive4
  • LEI statusLapsed (not renewed)4
  • Registered address御影町1番1号, 745-8648 周南市, Japan4
  • Registered withNational Tax Agency, 12500010090804

Tokuyama Corporation (株式会社トクヤマ, Kabushiki-gaisha Tokuyama) is a Japanese, Tokyo-based chemical company and the world's fourth largest silicon manufacturer.3

Corporate structure

Tokuyama Corporation sits at the top of its group. 2 entities, 1 country on record. Switch between the flow chart and the network, and select any entity to see its details.

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); subsidiaries, stakes and holdings from Wikidata (CC0). Each entity in the chart links to its source.

Products and brands

  • sodium carbonate

Listed on Wikidata.1

Chemicals business

Soda ash and calcium chloride

Chlor-alkali and vinyl chloride products: caustic soda (liquid, flake), propylene oxide, vinyl chloride monomer

New organic chemicals: isopropyl alcohol

Cement business

Portland cement: ordinary, early-strength, medium-heat

Read the full text

Recycling services

Fresco Giclee

Specialty products business

Electronic materials: polycrystalline silicon

Fumed silica

SHAPAL products: aluminum nitride (powder, granules)

IC chemicals and the cleaning system: high purity chemicals for electronics manufacturing, positive-type photoresist

Life and amenity business

Fine Chemicals: photochromic dye materials, hard coating solutions for plastic lenses, pharmaceutical bulk ingredients, amino radical protectants

Microporous film: polyethylene porous film

Dental materials

Source

From Wikipedia’s article on Tokuyama Corporation, shared under CC BY-SA 4.0.7

Subsidiaries and ownership

Subsidiaries

From Wikidata.1

Timeline

  1. 1918Founded Founded1

SEC filer profile

How Tokuyama Corporation is registered with the Securities and Exchange Commission, from its EDGAR record and the cover page of its latest annual report.

  • Name on EDGARTokuyama Corp2
  • CIK0001828477
  • Employer ID (EIN)94-30370302
  • Fiscal year endsMarch 312
  • Business addressFront Place Akihabara,, 7-5, Sotokanda 1-Chome, Chiyoda-Ku,, Tokyo, M0 101-86182
  • Phone81-3-5207-25512
  • On EDGAR sinceOct 29, 20202
  • Filings3 in all: CB (2), F-X (1)2