Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6896865 | Method for recovering hydrogen chloride from chlorine based waste and use of recovered hydrogen chloride | Kouya Honjoh, Tsugio Murakami | 2005-05-24 |
| 5948265 | Ion-exchanger, process for production thereof, and process for removal of multiply charged anions employing the ion-exchanger | Hidetoshi Wakamatsu, Manabu Sakurai, Tsugio Murakami | 1999-09-07 |
| 5861537 | Method of producing high-quality polyethylenepolyamines | Shunya Shinohara | 1999-01-19 |
| 5279717 | Process for removing chlorate salt from aqueous alkali chloride solution | Kengo Okajima, Hiroyuki Wakamatsu, Tsugio Murakami | 1994-01-18 |
| 5039424 | Method for treating an amine-containing waste water | Keiji Mitarai, Masahiko Fujii, Ieyoshi Inoue | 1991-08-13 |
| 4906782 | Process for preparation of alkyleneamines | Yasushi Hara, Yukihiro Tsutsumi | 1990-03-06 |
| 4845297 | Process for producing polyamines | Keiji Mitarai, Yukihiro Tsutsumi | 1989-07-04 |
| 4625064 | Method for producing bis [.beta.(N,N-dimethylamino)ethyl]ether | Keiji Mitarai, Yukihiro Tsutsumi | 1986-11-25 |
| 4492803 | Method for producing bis[.beta.-(N,N-dimethylamino)alkyl]-ether | Keiji Mitarai, Yukihiro Tsutsumi | 1985-01-08 |
| 4490556 | Method for preparing bis[.beta.-(N,N-dimethylamino)ethyl]ether | Hideo Sakka, Yukihiro Tsutsumi | 1984-12-25 |
| 4182919 | Process for reaction in catalyst suspension system | Shunsuke Mabuchi, Kenji Tsuzuki | 1980-01-08 |