- CEO
- Noriaki Taneichi
- Full Time Employees
- 2,132
- Sector
- Process industries
- Industry
- Chemicals: major diversified
- Address
- 150 Nakamaruko Kawasaki KN Japan 211-0012
- IPO Date
- Jul 30, 1986
- Business
- Tokyo Ohka Kogyo Co., Ltd. manufactures and sells chemical products and semiconductor process equipment primarily for the semiconductor manufacturing, packaging, and display industries; the company offers a broad portfolio of photoresists including g/i-line, KrF excimer laser, ArF excimer laser, and EUV types; wet etching and deep dry etching resists; developers, rinses, and stripping solutions; thinners; adhesion enhancers; DSA and reflective multilayer materials; lift-off and bump formation materials for semiconductor packaging; photosensitive liquid repellent coatings; protective coatings; adhesives; photosensitive permanent films for CMOS sensors and display applications; high-purity chemicals; and processing equipment such as coating, developing, vacuum UV hardening, and chemical supply machines, as well as wafer handling systems for through-silicon via processes, zero Newton bonding/debonding machines, and microprocessing films. Founded in 1940 and headquartered in Kawasaki, Japan, Tokyo Ohka Kogyo operates globally with facilities in Japan, South Korea through subsidiary TOK Advanced Materials Co., Ltd., and supports production for semiconductors, displays, MEMS, image sensors, IoT devices, AI systems, autonomous vehicles, and renewable energy equipment. In recent developments, the company acquired micro resist technology GmbH in Germany in February 2025 to expand its advanced materials portfolio; initiated construction of a new Pyeongtaek Plant in South Korea in August 2025 for high-purity chemicals production, slated to commence operations in the second half of 2027 with an investment of approximately 12 billion yen; and continues expansion at its Koriyama Plant in Japan, the world's largest photoresist manufacturing facility under construction.