Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6103111 | Tourmaline composite grains and apparatus using them | Yoshinori Kakamu, Minoru Tanaka | 2000-08-15 |
| 6034013 | Tourmaline composite grains and apparatus using them | Yoshinori Kakamu | 2000-03-07 |