Noboru Kosaka
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| Noboru Kosaka 8-dan | |
|---|---|
| Native name | 小阪昇 |
| Date of Birth | 18 February 1950 |
| Place of Birth | Kobe City, Hyogo Prefecture |
| Teacher | Kingo Fujiuchi 8-dan |
| Tournament | Wins |
|---|---|
| Shinjin-O | 1 title (term 9) |
| Rank | Date |
|---|---|
| 8-kyu | 1962 |
| 1-dan | 1965 |
| 4-dan | 1 October 1973 |
| 5-dan | 17 November 1980 |
| 6-dan | 9 July 1987 |
| 7-dan | 28 September 1999 |
| Retired | 14 July 2010 |
| 8-dan | 1 April 2020 |