Kanjiro Kawai -  Early member of the Mingei movement and lifelong friend of Bernard Leach and Shoji Hamada. His output was tremendous. He was a master of glazes, and performed 10,000 experiments on glazes while still a student at the ceramic divisions of Tokyo Technical College and Kyoto Municipal Institute of Ceramics. Like his friend Hamada, Kawai never signed his work but said: "My work itself is my best signature."