Takashi Aketagawa was a Japanese ocarina sculptor who invented the 12 hole ocarina in 1928. 
He started the Japanese Ocarina Manufacturer, Aketa.
He was born in 1909 and died in 1958. 
- ↑ http://www.ocarina-vale.com/History3.html Ocarina History Page 3
- ↑ http://translate.googleusercontent.com/translate_c?hl=en&ie=UTF-8&sl=ja&tl=en&u=http://www.aketa.org/hossoku.html&rurl=translate.google.com&usg=ALkJrhgi5tpfoZELJ-YBrmEm8OOjXncYaA When Established (Translated English)