Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5886228 | Highly purified 1-aminopropanediol-2,3 | Hiroshi Koyama | 1999-03-23 |
| 5874624 | Process for the preparation of a dihydroxyamino compound | Akira Horiguchi, Akihisa Takabe | 1999-02-23 |
| 5750792 | Highly purified 1-aminopropanediol-2,3 | Hiroshi Koyama | 1998-05-12 |
| 5556516 | Method for the purification of 1-aminopropanediol-2,3 | Hiroshi Koyama | 1996-09-17 |
| 4629606 | Recovery of tungsten compounds | Yoshiyuki Imagire, Teruhiko Hirabayashi, Nobuo Nonaka, Toshifumi Kitagawa, Yasukazu Murakami +3 more | 1986-12-16 |