Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7201806 | Washing method | — | 2007-04-10 |
| 6048905 | Liquid amine composition for emulsifiers for bitumen | Shigeru Nagao, Ryoichi Tamaki, Takao Taniguchi, Keiichiro Tomioka, Kouji Koyanagi | 2000-04-11 |
| 6013681 | Production of bituminous emulsion and liquid amine emulsifier therefor | Ryoichi Tamaki, Hitoshi Funada, Takao Taniguchi, Francisco Castaneda Juarez, Cesar Alvarez Ortiz +2 more | 2000-01-11 |
| 5928418 | Asphalt emulsion | Ryoichi Tamaki, Hirotaka SASAKI, Hitoshi Funada, Takao Taniguchi | 1999-07-27 |
| 5652203 | Process of overbasing a salicylic ester and product thereof | Shuichi Inaya | 1997-07-29 |