Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7905434 | Powder processing apparatus | Makio Naito, Hiroya Abe, Kiyoshi Nogi, Takehisa Fukui, Masahiro Yoshikawa | 2011-03-15 |
| 7686238 | Powder processing method | Makio Naito, Hiroya Abe, Kiyoshi Nogi, Takehisa Fukui, Masahiro Yoshikawa | 2010-03-30 |
| 5081072 | Manufacturing method of superconducting material and product and superconducting material | Tohei Yokoyama, Makio Naito, Masahiro Yoshikawa | 1992-01-14 |
| 4789105 | Particulate material treating apparatus | Akio Tanaka, Keiichiro Kohmitsu, Tohei Yokoyama, Kiyoshi Urayama, Sadamitsu Matsuo +1 more | 1988-12-06 |
| 4292172 | Apparatus for classifying particles | Tohei Yokoyama, Noriyoshi Kaya | 1981-09-29 |
| 4260478 | Apparatus for classifying particles | Tohei Yokoyama, Katsuya Mizui, Haruhisa Yamashita, Kouichi Doi | 1981-04-07 |