Company
Headquarters: Tokyo, Japan
Employees: 320
¥9.14 Billion
JPY as of Jan. 1, 2026
US$58.3 Million
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Koken Ltd., together with its subsidiaries, produces and sells occupational personal protective equipment in Japan and internationally. It operates in Mask-Related Business and Other Businesses segments. The company offers clean air solutions, including KOACH, an open clean zone creator; KOKENLAMINAR, a push-pull ventilation system; and LAMIKOACH, an air ventilation system as contamination source control. It also provides IMADEZE, a copper-based lactate antibacterial agent; masks for medical facilities and general consumers; and functional water production systems, such as electrolyzed water generators, endoscope washers/disinfectors, blood stain washer kits, and portable showers, as well as magnetic water treatment systems. In addition, the company offers respirators for industrial use, including particulate respirators, powered air-purifying respirators, supplied air respirators, chemical cartridge respirators, and gas masks; respirators for general consumers; equipment for accident and disaster countermeasures; and protective clothes, ear plugs, face shields, etc. Koken Ltd. was founded in 1943 and is headquartered in Tokyo, Japan.