Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5085752 | Electrolytic cell | Tosiaki Yamaguti, Nobuhiko Fujieda, Yoshihiro Tsuzikawa | 1992-02-04 |
| 5084156 | Electrolytic cell | Tosiaki Yamaguti, Nobuhiko Fujieda, Yoshihiro Tsuzikawa, Isao Harada | 1992-01-28 |
| 4980144 | Process for purifying nitrogen trifluoride gas | Nobuhiko Koto, Toshihiko Nishitsuji, Isao Harada | 1990-12-25 |
| 4975259 | Method of liquefying and condensing nitrogen trifluoride and a method of purifying nitrogen trifluoride | Hiroyuki Hyakutake, Isao Harada, Toshihiko Nishitsuji | 1990-12-04 |
| 4960581 | Method for preparing gaseous metallic fluoride | Isao Harada, Yukihiro Yoda, Toshihiko Nishitsuji, Akio Kikkawa | 1990-10-02 |
| 4933158 | Method for purifying nitrogen trifluoride gas | Makoto Aritsuka | 1990-06-12 |