What TOK America does

TOK America is the US operating subsidiary of Tokyo Ohka Kogyo Co., Ltd. (TOK), a Japanese specialty chemical manufacturer founded in 1936 and listed on the First Section of the Tokyo Stock Exchange. Headquartered in Hillsboro, Oregon, with a corporate sales office in Milpitas, California, the entity functions as the dedicated supply hub for semiconductor photoresists and high-purity chemical agents serving customers in the United States and Europe. The company originated as OHKA AMERICA, INC. in California in 1987, merged with T.O.K. INTERNATIONAL, INC. in Oregon in 1992, began Oregon Plant operations in 1993, and was renamed Tokyo Ohka Kogyo America, Inc. in 2006.

The company's core business is the manufacture and sale of polymer-containing functional photoresists across the full lithography wavelength spectrum (g-Line at 436nm, i-Line at 365nm, KrF at 248nm, ArF at 193nm, ArF Immersion, and EUV) for semiconductor circuit formation at nodes down to 10nm scale. The portfolio extends to semiconductor packaging photoresists for wafer-level CSP, SiP, RDL, TAB, COF, and MEMS processes, plus US-manufactured auxiliary chemicals including strippers, developers, and thinners. A smaller medical device materials business applies the same functional polymer platform to structure materials, surface modification coatings, microprocessing films, and a thin-film mmWave absorber developed with the University of Tokyo. The parent operates eight Japanese manufacturing facilities, including the Gotemba Plant which features the world's first metal-free photoresist production line.

TOK America generates revenue through direct B2B enterprise sales of photoresist materials, auxiliary chemicals, process equipment, and contract manufacturing/inspection services to semiconductor device manufacturers. Pricing is negotiated inquiry-by-inquiry and not publicly disclosed. The company supplements its US sales motion with a European subsidiary (TOKYO OHKA KOGYO EUROPE B.V., established 2005), industry seminars, and an ongoing EUV co-development partnership with SEMATECH. As a wholly-owned subsidiary of a listed Japanese parent, TOK America's standalone financials are not publicly reported.

Name

TOK America

Legal name

Tokyo Ohka Kogyo America, Inc.

Website

https://tokamerica.com

Company type

Private

Founded year

1987

Operating status

Operating

Headcount range

101–250 employees

Short description

TOK America is a Hillsboro, Oregon-based wholly-owned subsidiary of Tokyo Ohka Kogyo that manufactures and supplies semiconductor photoresists (g-Line through EUV), auxiliary chemicals, packaging photoresists, and toll manufacturing services to enterprise chip makers in the United States and Europe.

Ownership category

akta.pro rank

Product category

Semiconductor Materials

NAICS

Semiconductor and Other Electronic Component Manufacturing (33441)

SIC

Semiconductors & Related Devices (3674)

akta.pro primary industry

Photoresists & Lithography Chemicals (Resists/Developers/Anti-Reflective Coatings) (HDAHAGAE)

akta.pro secondary industry

Semiconductor Process Chemicals (Wet & Dry) (IMAEAKAA)

Keywords

• Semiconductor photoresists
• Photolithography materials
• EUV lithography
• Semiconductor chemicals
• Microfabrication materials

Headquarters

HQ city

Hillsboro

HQ country

United States

HQ region

North America

Offices10 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Semiconductor Photoresist Sales: Sale of photoresist materials including g-Line, i-Line, KrF, ArF, ArF Immersion, and EUV photoresists to semiconductor manufacturers. Revenue generated through direct product sales to device manufacturers in US and Europe.
2. Auxiliary Chemical Products: Sale of auxiliary chemicals including strippers, developers, thinners, and cleaning solutions for semiconductor manufacturing processes
3. Process Equipment: Development and manufacturing of process equipment including etchers, ashers, coaters, and thick film processing equipment for semiconductor fabrication
4. Toll Manufacturing Services: Contract manufacturing services leveraging manufacturing facilities and expertise to produce liquid and powder based chemistries for customers, including product engineering, batch preparation, quality control, and packaging services
5. Medical Device Materials: Sale of high value-added materials for medical devices including structure materials, surface modification materials, microprocessing film, and polyimide film using functional polymer technologies

Go-to-market motion1 record

Distribution channels2 records

Marketing channels3 records

Core offering

TOK America develops and manufactures photoresist materials and supporting chemicals essential for semiconductor circuit formation using photolithography. The company's portfolio spans g-Line (436nm), i-Line (365nm), KrF (248nm), ArF (193nm), ArF immersion, and EUV photoresists, along with auxiliary chemicals, semiconductor process equipment, and toll manufacturing services for chip manufacturers in the United States and Europe.

Product overview

TOK America is a semiconductor materials company and wholly-owned subsidiary of Tokyo Ohka Kogyo Co., Ltd., providing a comprehensive portfolio of photoresist products and supporting chemicals for the semiconductor industry. The product portfolio centers on photoresist materials across multiple wavelength categories (g-Line 436nm, i-Line 365nm, KrF 248nm, ArF 193nm, ArF Immersion, and EUV) for semiconductor manufacturing at various resolution nodes from submicron to sub-10nm. Supporting these core photoresists are auxiliary chemicals including strippers, developers, and thinners, many manufactured in the USA. The company also serves the semiconductor packaging market with photoresists for wafer-level CSP, SiP, RDL, TAB, and COF processes, as well as MEMS manufacturing. Beyond semiconductors, TOK America offers medical device materials including structure materials (TMMF/TMMR, UV nanoimprint materials), surface modification materials, microprocessing films, mmWave absorbers, and high-heat-resistance polyimide films. The company provides contract manufacturing services through its Oregon facility, offering scale-up from pilot to mass production volumes.

Differentiator

Problem solved

Functional benefit

Brands

• TOKA: TOKA Manufacturing refers to the manufacturing capabilities and services division of TOK America.

Products and services

• g-Line Resist Photoresist material for semiconductor manufacturing using 436nm wavelength light, with film thickness applications from 1um to 7um. Manufactured in Japan facilities.
• i-Line Resist Photoresist material for semiconductor manufacturing using 365nm wavelength light, with film thickness applications from 0.3um to 7um. Available in positive and negative types, manufactured in US and Japan facilities.
• KrF Resist Photoresist material for semiconductor manufacturing using 248nm wavelength light, with film thickness applications from 0.3um to 3um. Available in positive and negative types.
• ArF Resist Photoresist material for semiconductor manufacturing using 193nm wavelength light, offering comprehensive lineup of positive and negative photoresists manufactured in Japan.
• ArF Immersion Resist Advanced photoresist material for next-generation 193nm ArF immersion lithography, enabling advanced miniaturization technology for semiconductor manufacturing.
• EUV Resist Extreme ultraviolet photoresist materials developed in cooperation with SEMATECH and industry leaders for next-generation EUV lithography technology targeting 10nm scale and below.
• Resist for Packaging Photoresist materials for advanced semiconductor packaging processes including wafer-level CSP, SiP, RDL, TAB, and COF technologies, enabling miniaturization of mobile devices.
• Auxiliary Chemicals Supporting chemical products including strippers, developers, and thinners for semiconductor manufacturing and packaging processes, with many variants manufactured in the USA.
• Semiconductor Process Equipment Process equipment including etchers, ashers, coaters, and thick film processing equipment developed alongside photoresists for integrated semiconductor fabrication solutions.
• Medical Device Materials (TMMF/TMMR, UV Nanoimprint) High value-added materials for medical device applications utilizing functional polymer technologies, including TMMF/TMMR photo patternable permanent materials for MEMS structure fabrication and UV nanoimprint materials for optical devices.
• Surface Modification Materials Hydrophilic and hydrophobic/oleophobic patternable materials enabling surface property modifications without pretreatment for medical device applications.
• Thin Film mmWave Absorber Thin film absorber for millimeter wave frequencies, developed in collaboration with Prof. Shin-ichi Ohkoshi of the University of Tokyo.
• Porous Polyimide Film Unique polyimide film with uniform pore structure for microprocessing applications, providing high heat resistance and high transparency.
• Toll Manufacturing Services Contract manufacturing capabilities for liquid and powder-based chemistries with scale-up from pilot to mass production levels, including product engineering, quality control, and packaging services.
• Inspection Services Chemical product qualification services using advanced laboratory instrumentation for physical and elemental testing including ICP-MS, ICP-OES, Gas Chromatograph, Ion Chromatograph, and SEM analysis.

Segments4 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature11 records

Partnerships

Two partnerships are on record, tiered core and minor.

• SEMATECHcoreStrategic or Co-development Partner · 1 January 2000TOK works in cooperation with SEMATECH and other industry leaders to develop viable EUV photoresist products which can meet the difficult targets required for next-generation EUV technology. This collaboration positions TOK at the forefront of extreme ultraviolet lithography development.
• Prof. Shin-ichi Ohkoshi, University of TokyominorStrategic or Co-development PartnermmWave absorber product developed in collaboration with Professor Shin-ichi Ohkoshi of the University of Tokyo for thin film mmWave absorption technology.

Scale indicators6 records

Recent moves9 records

Expansion highlights5 records

Direct peers

• Shin-Etsu Chemical: Global market leader in semiconductor photoresists with broad lithography chemistry portfolio across all wavelengths including EUV. Directly competes with TOK America on every advanced node where advanced resist materials are qualified; its scale and R&D resources make it the primary share reference for TOK's positioning.
• JSR Corporation: Long-standing direct competitor in ArF, ArF immersion, and EUV photoresists, with deep qualifications at leading-edge foundries. Following its 2024 integration with Sumitomo Chemical's resist business, JSR now forms the largest advanced photoresist supplier globally and is the most direct competitor to TOK America at the most advanced nodes.
• Sumitomo Chemical: Competes directly in semiconductor photoresists across ArF immersion and EUV nodes, and is now combined with JSR's electronic materials business. TOK America and Sumitomo compete for the same advanced-node resist qualifications and for share of auxiliary chemistries used in customer fabs.
• FUJIFILM Electronic Materials: Subsidiary of Fujifilm Holdings competing in semiconductor photoresists (g-line, i-line, KrF, ArF) and ancillary chemicals. Directly comparable to TOK America as a materials-focused photoresist supplier serving global semiconductor fabs with similar wavelengths and ancillary chemistries.
• DuPont de Nemours: Through its Electronics & Industrial segment, DuPont supplies photoresists (including EUV) and ancillary materials to semiconductor manufacturers. Directly competes with TOK America in advanced lithography chemistries, particularly for EUV and ArF immersion.
• Merck KGaA (Electronics / EMD Electronics): Supplies photoresists, ancillary chemicals, and electronic materials to semiconductor fabs globally. Comparable to TOK America as a diversified specialty chemicals supplier into semiconductor lithography and adjacent process steps.

Emerging players

• Dongjin Semichem: Korean photoresist supplier with growing ArF and KrF portfolio primarily serving memory customers. Less advanced in EUV than TOK but increasingly competitive at mature and mid-range nodes where TOK also participates.

Broad incumbents

• Avantor: Broad-line supplier of high-purity chemicals and materials to semiconductor and life-science customers. While not a leading-edge photoresist specialist like TOK, Avantor competes on ancillary chemistries (strippers, cleaners, etchants) and benefits from the same fab-customer relationships TOK cultivates.
• Entegris: Supplies advanced materials and fluid handling solutions to semiconductor fabs. Not a direct photoresist competitor, but operates in adjacent process-chemical and filtration categories at the same customers as TOK America, sharing the same fab-driven demand cycle.

Others

• Tokyo Ohka Kogyo Co., Ltd. (parent): Japanese parent of TOK America and the consolidated entity in which TOK America's operations ultimately reside. Listed on the Tokyo Stock Exchange First Section since 1990, the parent is itself one of the leading global photoresist manufacturers and the technology source for TOK America.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/tok-america

Compliance8 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 TOK America