Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4637922 | Method for removing organic materials from a wet process phosphoric acid | Masaki Nakatani | 1987-01-20 |
| 4582937 | Process for recovering ethyleneamines | Tsugio Murakami, Hiroyuki Saito, Osamu Fujii | 1986-04-15 |
| 4377562 | Solvent extraction method of phosphoric acid | Osamu Watanabe | 1983-03-22 |
| 4355014 | Stable calcium hypochlorite composition and method for manufacture thereof | Tsugio Murakami, Kazushige Igawa | 1982-10-19 |
| 4349519 | Purification of wet process phosphoric acid | Osamu Watanabe, Masaki Nakatani | 1982-09-14 |
| 4208389 | Purification of phosphoric acid | Mitsuo Kikuchi | 1980-06-17 |