JSR Corporation (JSR) is a Japanese specialty materials company headquartered in Tokyo. Established in 1957 as Japan Synthetic Rubber Co., Ltd., the company expanded beyond its origins in synthetic rubber into high-performance materials, and has since divested its legacy elastomers business to focus on technology-driven segments. JSR operates R&D, manufacturing, and sales sites in Asia, Europe, and the Americas.
JSR’s core portfolio centers on materials for the electronics and life sciences industries. Offerings include photoresists and related patterning, polymer, and process materials used in semiconductor fabrication, as well as display and optical materials. Through its life sciences operations, JSR provides bioprocessing materials and services that support biologics development and manufacturing. The company serves customers across semiconductor, display, and healthcare-related value chains.