TATEHO CHEMICAL INDUSTRIES CO.,LTD.

What TATEHO CHEMICAL INDUSTRIES CO.,LTD. does

TATEHO CHEMICAL INDUSTRIES CO., LTD. is a Japanese specialty chemicals manufacturer founded in 1966, headquartered in Ako City, Hyogo Prefecture, and wholly owned by Air Water Inc., a Tokyo Stock Exchange-listed diversified industrial group. The company produces magnesium oxide (MgO), magnesium hydroxide, and related calcium and ceramic compounds derived from seawater-extracted magnesium (sourced at 0.13% concentration). Its core product portfolio includes DENMAG® electro-fused magnesium oxide for steelmaking refractories and heater insulation, TATEHOMAG® light-burned magnesium oxide used as an annealing separator for grain-oriented electrical steel sheets in transformers (known as "magic powder"), PUREMAG® high-purity grades, ECOMAG® non-halogen flame retardants for semiconductor encapsulation, MIRACRYSTAR® MgO single crystal substrates for high-temperature superconductor and diamond films, and TATECERA® magnesium oxide ceramics (insulators, setters, crucibles). Specialty offerings include CHARGEMAG® PM-1 chemical heat storage material developed with Chiba University and Toyota Motor Corporation for industrial waste heat recovery, and COOLMAG® thermal conductive fillers. The company also markets LifeMag water-soluble consumer magnesium supplements.

The company operates a vertically integrated production model from raw magnesium hydroxide (MAGSTAR®) extracted from seawater through finished products, leveraging proprietary particle size control, shape control, and electro-fusion technologies developed since 1960. Production spans three Japanese factories (Ako, Anei in Ako City, and Hibiki-rata in Kitakyushu City), plus wholly-owned subsidiaries in Dalian (China) for electro-fused magnesia, Webb City, Missouri (Tateho Ozark Technical Ceramics) for ceramics, and two Italian ceramics operations (H.T.C. S.r.l. and Redco S.r.l.) acquired in December 2024, creating a four-country global manufacturing footprint. The company holds Patent 3761867 for its TATEHOMAG® annealing separator composition, which was successfully defended against two invalidation challenges in 2017-2019 with validity confirmed by the Japan Patent Office and Supreme Court. ISO9001 certification (valid until November 20, 2027) and ISO14001 certification (since March 2002) cover quality and environmental management across all Japanese factories.

Tateho's revenue model is B2B industrial sales of chemical and ceramic materials to enterprise customers in the electrical steel and transformer manufacturing, steelmaking refractory, semiconductor encapsulation, electric heater (appliance and industrial), automotive heater, and consumer health segments. Distribution is conducted through direct field sales supplemented by product inquiry forms on the company's website, with regional sales offices in Tokyo and Ako City and local manufacturing subsidiaries serving Asia, North America, and Europe. The company pursues go-to-market through industry trade shows (ENEX, INCHEM TOKYO, Ceramic Expo, Chemical Material Japan), academic publications, Tateho Labo technical news content, and NEDO program participation. Export ratio exceeds 50% of total sales. The company maintains approximately 270 employees solo and approximately 400 consolidated (post-Italian acquisition).

Name

TATEHO CHEMICAL INDUSTRIES CO.,LTD.

Legal name

タテホ化学工業株式会社 (Tateho Chemical Industries Co.,Ltd.)

Website

https://tateho.co.jp

Company type

Private

Founded year

1966

Operating status

Operating

Headcount range

251–500 employees

Short description

TATEHO CHEMICAL INDUSTRIES is a Japanese specialty chemicals manufacturer, wholly owned by Air Water Inc., producing magnesium oxide, magnesium hydroxide, and ceramic compounds from seawater for industrial customers in electrical steel, refractory, semiconductor, automotive, and consumer health markets across Asia, North America, and Europe.

Ownership category

akta.pro rank

Product category

Specialty Chemicals — Magnesium Compounds

NAICS

Ground or Treated Mineral and Earth Manufacturing (327992)

SIC

Industrial Inorganic Chemicals (2810)

akta.pro primary industry

Magnesite & Magnesium Minerals (IMAEAFAL)

akta.pro secondary industry

Mineral/Particulate Thickeners (Silicates, Clays, Calcium Carbonate as texturizers) (AFAJAMAJ)

Keywords

• Electrofused magnesium oxide
• Magnesium hydroxide chemicals
• Ceramic insulators
• Chemical heat storage
• Refractory raw materials

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Offices8 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Technology or R&D, Infrastructure, Marketing or Sales

Revenue model

1. Specialty Chemicals Manufacturing and Sales: Manufactures and sells magnesium and calcium compounds including magnesium oxide, magnesium hydroxide, and calcium oxide. Core products include electro-fused magnesia (DENMAG®), light-burned magnesia (TATEHOMAG®), high-purity magnesia (PUREMAG®), and flame retardants (ECOMAG®). Revenue from industrial customers in electrical steel, refractory, chemical, and semiconductor industries.
2. Ceramics Manufacturing and Sales: Manufactures and sells magnesium oxide ceramic products (TATECERA®) including insulators, setters, and crucibles from self-produced electro-fused magnesia. Revenue from industrial heater, electronics, and nuclear customers.
3. Chemical Heat Storage Materials: Sales of CHARGEMAG® PM-1 chemical heat storage material for industrial waste heat recovery and heat transport applications. Part of NEDO-funded energy conservation projects.
4. Consumer Supplements: Water-soluble magnesium supplement products sold under LifeMag brand for consumer health market.

Go-to-market motion1 record

Distribution channels5 records

Marketing channels5 records

Core offering

Tateho Chemical Industries manufactures and sells magnesium and calcium compounds derived from seawater, including electro-fused magnesia (DENMAG®), light-burned magnesia (TATEHOMAG®), high-purity magnesia (PUREMAG®), magnesium hydroxide (MAGSTAR®, ECOMAG®), and magnesium oxide single crystal substrates (MIRACRYSTAR®). The company also produces magnesium oxide ceramic insulators, setters, and crucibles (TATECERA® series) and specialty products including chemical heat storage materials (CHARGEMAG®) for industrial waste heat recovery and consumer magnesium supplements (LifeMag). Products serve electrical steel manufacturers, steelmakers, semiconductor companies, heater manufacturers, automotive suppliers, and energy/environmental technology developers.

Product overview

TATEHO CHEMICAL INDUSTRIES CO.,LTD. is a manufacturer of magnesium and calcium compounds and ceramics, offering a comprehensive portfolio of branded products derived from seawater magnesium. The product portfolio centers on magnesium oxide (DENMAG®, TATEHOMAG®, PUREMAG®, DISPERMAG®) and magnesium hydroxide (MAGSTAR®, ECOMAG®) as core materials, supplemented by aluminum magnesium spinel (TATEMIC®), calcium compounds (CALFUSE®, Q-ALU®), zirconia and alumina ceramics (TATECERA® series), and single crystal substrates (MIRACRYSTAR®). Specialty products include CHARGEMAG® chemical heat storage materials for thermal energy storage applications and COOLMAG® thermal conductive fillers. The company also manufactures industrial equipment (tap flow measuring devices, heater components) and consumer supplements. Products serve diverse industries including electrical steel, steelmaking refractories, electric heaters, semiconductors, automotive, and environmental technologies.

Differentiator

Problem solved

Functional benefit

Brands

• TATEHOMAG®: Light-burned magnesium oxide used as annealing separator for electrical steel sheets, also used in surface treatment agents and ceramic raw materials.
• DENMAG®
• PUREMAG®
• ECOMAG®
• MAGSTAR®
• DISPERMAG®
• MIRACRYSTAR®
• TATECERA®
• TATEMIC®
• CALFUSE®
• Q-ALU®
• CHARGEMAG®
• COOLMAG®
• REFTAT®
• LifeMag

Products and services

• DENMAG® (Electrofused Magnesium Oxide) Electrofused magnesium oxide with high crystallinity, used as raw material for steel furnace bricks and as electrical insulation material for heaters. Targeted at steelmakers, refractory producers, and industrial heater manufacturers.
• PUREMAG® FNM-G (High-Purity Magnesium Oxide) High-purity magnesium oxide powder used in various industrial applications requiring superior chemical properties. Targeted at chemical, electronics, and advanced materials manufacturers.
• DENMAG® (Electrothermal Magnesium Oxide) Electrothermal magnesium oxide used as insulation material for sheathed electric heaters and heating elements. Targeted at home appliance manufacturers (coffee makers, electric pots), industrial molding equipment makers, and heater producers.
• TATEHOMAG® (Light-Burned Magnesium Oxide) Light-burned magnesium oxide with small particle size and high reactivity, used as surface treatment agents and ceramic raw materials. Targeted at ceramics manufacturers and chemical processors.
• TATEHOMAG® #700 (Light-Burned Magnesium Oxide) Light-burned magnesium oxide with specific properties for specialized industrial applications. Targeted at manufacturers requiring controlled reactivity and particle size characteristics.
• DISPERMAG® (High-Dispersibility Magnesium Oxide) High-dispersibility magnesium oxide with 99.9% purity, designed for electronic materials and optical applications. Targeted at capacitor manufacturers and electronics materials companies.
• TATEHOMAG® (Electrical Steel Sheet Magnesium Oxide)
• DENMAG® SSP (Special Grade Electrofused Magnesium Oxide) Special grade electrofused magnesium oxide for advanced industrial applications. Targeted at advanced materials and refractory manufacturers requiring higher specification magnesia.
• MIRACRYSTAR® (Magnesium Oxide Single Crystal Substrate) Magnesium oxide single crystal substrate used as standard substrate for thin film formation of high-temperature superconducting films and diamond films. Targeted at research institutions and advanced electronics materials producers.
• TATECERA® EMG (Magnesium Oxide Ceramic Insulators) Magnesium oxide ceramic insulators with excellent electrical insulation, thermal conductivity, and heat resistance for atomic, industrial, and general heater applications. Targeted at heater manufacturers, automotive suppliers, and nuclear/industrial equipment makers.
• TATECERA® SMG (Magnesium Oxide Ceramics — Setters) Magnesium oxide ceramics for setters used as firing jigs for electronic components, produced from in-house electrofused magnesium oxide. Targeted at electronic component manufacturers.
• TATECERA® CMG (Magnesium Oxide Ceramics — Crucibles and Setter Plates) Magnesium oxide ceramics for crucibles and setter plates used for metal melting applications. Targeted at metallurgical manufacturers and metal processing companies.
• MAGSTAR® (Magnesium Hydroxide from Seawater) Magnesium hydroxide produced by extracting magnesium from seawater at 0.13% concentration, used as a precursor for magnesium oxide production and various chemical applications. Targeted at chemical manufacturers.
• ECOMAG® (Non-Halogen Flame Retardant Magnesium Hydroxide) Non-halogen flame retardant magnesium hydroxide developed in 1997, providing premium flame retardancy for semiconductor encapsulation materials. Targeted at semiconductor encapsulation manufacturers and electronics materials companies.
• PUREMAG® FNM-HS (High-Purity Magnesium Hydroxide) High-purity magnesium hydroxide for specialized applications requiring superior chemical purity. Targeted at chemical and pharmaceutical manufacturers.
• TATEMIC® (Magnesium Aluminate Spinel) Magnesium aluminate spinel with high purity, suitable for optical materials, catalyst materials, and various additive applications. Targeted at optical, catalyst, and refractory manufacturers.
• CALFUSE® (Electrofused Calcium Oxide) Electrofused calcium oxide product from Tateho's specialty chemical line, used for refractory applications. Targeted at refractory manufacturers.
• TATECERA® SZR (Zirconium Dioxide Ceramics) Zirconium dioxide ceramics with excellent thermal and mechanical properties. Targeted at industrial manufacturers requiring high-performance ceramic components.
• TATECERA® CAL (Aluminum Oxide Ceramics) Aluminum oxide ceramics for industrial applications requiring high thermal resistance and durability. Targeted at industrial manufacturers and equipment makers.
• Q-ALU® (Calcium Sulfite) Calcium sulfite product from Tateho's specialty chemical offerings for industrial applications. Targeted at industrial chemical users.
• Tap Flow Measuring Device Tap and flow measuring device developed with accumulated expertise for accurate evaluation of powder flow rate and tap density for heater manufacturers. Targeted at heater manufacturer quality control laboratories.
• Heater-Related Components Heater-related components and materials for industrial heating applications. Targeted at industrial heating equipment manufacturers.
• CHARGEMAG® PM-1 (Chemical Heat Storage Material) Magnesium hydroxide-based chemical heat storage material that achieves approximately 50°C reduction in heat storage start temperature and peak temperature compared to standard magnesium hydroxide, enabling heat storage at around 300°C. Targeted at energy and industrial companies focused on waste heat recovery, heat transport, and thermal energy storage. Co-developed with Chiba University under NEDO programs with Toyota Motor.
• COOLMAG® (Thermal Conductive Magnesium Oxide Filler) Thermal conductive filler utilizing magnesium oxide's high thermal conductivity while significantly improving moisture resistance and filling properties compared to conventional products. Targeted at thermal management applications and electronics manufacturers.
• REFTAT® (Aluminum Silicon Carbide Anti-Oxidation Material) Aluminum silicon carbide (Al4SiC4) anti-oxidation material for refractories. Targeted at refractory manufacturers seeking oxidation-resistant additives.
• LifeMag Water-Soluble Magnesium Supplement Water-soluble magnesium supplements developed using proprietary manufacturing technology, designed for easy daily intake to supplement magnesium deficiency. Targeted at individual consumers for dietary magnesium supplementation.

Quantifiable outcome

• CHARGEMAG® reduces heat storage start and peak temperature by approximately 50°C compared to standard magnesium hydroxide, enabling waste heat recovery at lower temperatures.
• +3 more outcomes

Named customers5 records

Segments5 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

Nine partnerships are on record, tiered core and minor.

• Tateho Ozark Technical Ceramics, Inc.coreChannel Partner/ Reseller/ Distributor · 19 December 2024US subsidiary established in 2015, manufacturing and selling ceramic products to North American customers from its facility in Webb City, Missouri.
• H.T.C. S.r.l.coreChannel Partner/ Reseller/ Distributor · 19 December 2024Italian ceramic products manufacturer based in Brescia, Italy. Acquired by Tateho in December 2024 as part of expansion of ceramics business in Europe.
• Redco S.r.l.coreChannel Partner/ Reseller/ Distributor · 19 December 2024Italian ceramic products manufacturer based in Bergamo, Italy. Acquired by Tateho in December 2024 as part of the European ceramics expansion.
• Toyota Motor Corporation (トヨタ自動車)coreStrategic or Co-development Partner · 1 January 2018Co-development partner in NEDO Strategic Energy Conservation Program for chemical heat storage material (CHARGEMAG®) and heat transport system development. Toyota serves as the lead proposing company and is developing the heat transport/pallet system while Tateho develops the heat storage material.
• Japan Environmental Technologies Research Co., Ltd. (日本環境技研)minorStrategic or Co-development Partner · 1 January 2018Co-development partner in NEDO chemical heat storage project, contributing to the heat transport system development alongside Tateho and Toyota.
• Chiba University (千葉大学)coreStrategic or Co-development Partner · 1 January 2018Academic research partner led by Professor Liu (劉), with whom Tateho co-developed CHARGEMAG® PM-1 chemical heat storage material. Joint research on magnesium hydroxide-based heat storage materials enabled the approximately 50°C reduction in heat storage temperature.
• Okazaki National Universities / RIKEN / Chiba University (理化学研究所・千葉大学)minorStrategic or Co-development Partner · 1 January 2018Research institutions collaborating in the NEDO heat storage transport system project alongside Tateho, Toyota, and energy companies.
• Dalian Tateho Chemical Co., Ltd. (大連達泰豪化学有限公司)coreChannel Partner/ Reseller/ Distributor · 1 January 2001Chinese subsidiary established in 2001 in Dalian Economic and Technological Development Zone, manufacturing and selling electro-fused magnesia for heater applications to Asian markets.
• Air-Water Group (エア・ウォーターグループ)coreOthersTateho Chemical Industries is a member of the Air-Water Group, operating under the group's purpose 'Earning gifts from the Earth, for people's hopes.' Air-Water is a major Japanese industrial gas and chemical company.

Scale indicators4 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Premier Magnesia LLC: US manufacturer of magnesium oxide and magnesium hydroxide products serving industrial, environmental, and agricultural markets. Comparable to Tateho across multiple MgO/Mg(OH)2 application categories including flame retardancy and water treatment.
• Martin Marietta Magnesia Specialties: Long-standing US producer of high-purity magnesium oxide and magnesium hydroxide for refractories, flame retardants, and chemicals. Compares to Tateho's specialty magnesia franchise, particularly in electrical steel and refractory end markets.
• Kyowa Chemical Industry (Kyowa Kagaku Kogyo): Japanese manufacturer of magnesium hydroxide and magnesium oxide for flame retardants, electrical steel, and chemical applications. Directly comparable as a competing Japanese magnesium compounds producer; notably the firm that challenged Tateho's Patent 3761867 in 2017-2019.
• Shin Nihon Chemical Industry Co., Ltd. (新日本化学工業): Japan-based manufacturer of magnesium oxide and hydroxide compounds from magnesia resources. A direct competitor in the Japanese specialty magnesia market with overlapping customers in steel, electrical, and chemical industries.
• J.M. Huber Corporation / Huber Engineered Materials: US-based producer of specialty magnesium hydroxide flame retardants and other mineral-based additives. Directly comparable to Tateho's ECOMAG® flame retardant and broader Mg(OH)2 business serving electronics encapsulation and polymer markets.

Broad incumbents

• NGK Insulators, Ltd. Japanese manufacturer of ceramic insulators, semiconductor substrates, and industrial ceramics. Comparable to Tateho's TATECERA® and MIRACRYSTAR® ceramic insulator and MgO single crystal substrate lines, but operates across a far broader electronics ceramics portfolio.
• Lhoist Group: Belgian global leader in lime, dolime, and mineral-based specialty products for steel, environmental, and industrial markets. Comparable via overlapping magnesia and calcium oxide product lines but as a much broader industrial minerals incumbent.
• CoorsTek, Inc. US-based global manufacturer of technical ceramics for industrial, semiconductor, and electronics applications. Comparable to Tateho's TATECERA® ceramics business for heaters and high-temperature applications, as a broad incumbent spanning multiple ceramic chemistries.
• RHI Magnesita N.V. Global market leader in refractories and magnesia-based products serving steel, cement, and glass industries. Compares to Tateho's DENMAG® refractory magnesia and MgO single crystal substrate, but operates as a broad incumbent across the magnesia value chain rather than a specialty niche player.

Regional players

• Grecian Magnesite S.A. Greek producer of caustic calcined magnesia, dead-burned magnesia, and raw magnesite for refractories and steel. Comparable as a magnesia producer but with European raw-material focus vs Tateho's seawater-derived Japanese process.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/tateho

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

Subsidiaries4 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about TATEHO CHEMICAL INDUSTRIES CO.,LTD.