Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5087648 | Method of providing fluidizing property to hydraulic cement compositions using cement dispersion agents comprising water soluble vinyl copolymer | Mitsuo Kinoshita, Toshihide Shimono, Tsuneo Yamamoto | 1992-02-11 |
| 4962173 | Cement dispersion agents comprising water soluble vinyl copolymer | Mitsuo Kinoshita, Toshihide Shimono, Tsuneo Yamamoto | 1990-10-09 |
| 4733042 | Welding control apparatus including a pressure regulating valve operated in accord with predetermined schedule of variations of a welding force control variable | Toshihiro Nishiwaki | 1988-03-22 |