Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8662504 | Tight-seal construction | Satoshi Tohdoh | 2014-03-04 |
| 8628094 | Metal seal | Satoshi Tohdoh | 2014-01-14 |
| 6357759 | Jacket seal | Yoshio Azuma, Takayoshi Mitsui | 2002-03-19 |
| 6286839 | Ring seal including a core surrounded by a metal jacket | Takayoshi Mitsui | 2001-09-11 |