- 1964 Born in Okayama, as the first son of second generation Issou KOYAMA
- 1984 Graduated from Faculty of Craft, Naniwa Junior College
- Started to study under Sozan KANESHIGE
- 1990 Independent
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- Won a prize and accepted four times at Art Exhibition of Okayama Prefecture
- Won prizes four times and accepted five times at Issui Pottery Exhibition
- Won prizes two times and accepted four times at Plastic Arts for the Tea
Ceremony
- Exhibition, Tanabe Museum of Art
- Won a prize at Bizen Pottery Exhibition
- Accepted in Contemporary Oribe Pottery Exhibition for Tea Ceremony
- Accepted in Japan Traditional Craft Exhibition, Chugoku Branch
- Accepted in Japan Traditional Craft Exhibition
- Solo Exhibition at Bizen Gallery Aoyama
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