The Hario company has been dedicated to the design, production, and sale of heatproof glass since it was founded in 1921, and is the only heatproof glass manufacturer in Japan to have a factory.

Hario began its history as a manufacturer of laboratory glassware. In 1948 it expanded its production to household items, starting with the coffee syphon.

Today Hario continues to make a variety of items, from microwave-safe kitchenware and coffee and tea implements, to aromatherapy and pet products.