Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10871175 | Speed controller | Hirosuke Yamada, Akiho Nishimura, Masahiko Yoshiwara | 2020-12-22 |
| 10627007 | Fluid control valve | Masahiko Yoshiwara | 2020-04-21 |
| D858704 | Flow control valve | Hirosuke Yamada, Akiho Nishimura, Masahiko Yoshiwara | 2019-09-03 |
| D855153 | Flow control valve | Hirosuke Yamada, Akiho Nishimura, Masahiko Yoshiwara | 2019-07-30 |
| D854658 | Flow control valve | Hirosuke Yamada, Akiho Nishimura, Masahiko Yoshiwara | 2019-07-23 |
| D844751 | Flow control valve | Hirosuke Yamada, Akiho Nishimura, Masahiko Yoshiwara | 2019-04-02 |
| 5657693 | Apparatus for cleaning printing cylinder | Tuneo Kumaki, Shozabu Inuyama, Isamu Zensho, Kazuo Fukuda | 1997-08-19 |