Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6034520 | Method of determination of active ions by electric conductivity and electric conductivity metering system therefor | Toshio Sugihara, Mitsuo Suzuki | 2000-03-07 |
| 5928784 | Polyvinyl alcohol fiber containing tourmaline particles | Toshio Sugihara, Siro Nakamura, Tadayoshi Utsumi, Ichiro Nagashima | 1999-07-27 |
| 5863653 | Rayon fiber containing tourmaline particles and method for the preparation thereof | Toshio Sugihara, Mitsuo Suzuki | 1999-01-26 |
| 5787525 | Layered fabric mattress | Toshio Sugihara, Mitsuo Suzuki | 1998-08-04 |