Koken Ltd.

Koken produces and sells occupational personal protective and environmental quality improvement equipment in Japan. Its business is organized into Mask-Related Business, Environmental-Related Businesses, and Business segments.

The company offers clean air solutions, including KOACH, a clean zone creator; and KOKENLAMINAR, a push-pull ventilation system, as well as surgical masks. Additionally, it offers respirators, including particulate respirators, chemical cartridge respirators, and gas masks for industrial use.

Its portfolio also includes respirators for general consumers, and protective clothes, earplugs, and face shields. Founded in 1943, the company is headquartered in Tokyo, Japan.