Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6160195 | Use of reagents to convert chrysotile and amosite asbestos used as insulation or protection for metal surfaces | Toshifumi Sugama | 2000-12-12 |
| 6005158 | Use of super acids to digest chrysotile and amosite asbestos in simple mixtures or matrices found in building materials compositions | Toshifumi Sugama, Ronald Webster | 1999-12-21 |
| 5763738 | Chemical agents for conversion of chrysotile asbestos into non-hazardous materials | Toshifumi Sugama | 1998-06-09 |
| 4526681 | Magnetic separation method utilizing a colloid of magnetic particles | Fritz J. Friedlaender, Makoto Takayasu, Jiann-Yang Hwang | 1985-07-02 |