Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4909634 | Stirring device | Taro Koshina, Makoto Irie, Shigeaki Takeda, Toyohiko Kubo, Masahiro Inoki | 1990-03-20 |
| 4849122 | Transparent electrical discharge machining fluid | Kouji Imai | 1989-07-18 |
| 4740323 | Method of lubricating working machinery | Hideo Kanamori, Katsumi Hashimoto, Yasusi Aida, Kohei Nakatani, Toshiyuki Harada | 1988-04-26 |