Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11473524 | Reciprocating motion engine | Kazuya Tsuji, Jun Komada, Takeshi Suzuki | 2022-10-18 |
| 11255581 | Free piston Stirling refrigerator | Kazuya Tsuji, Jun Komada | 2022-02-22 |
| 7150069 | Electric vacuum cleaner | Masahiko Hori, Toshiaki Ogawa, Takeshi Yamada | 2006-12-19 |
| 7070639 | Cyclonic vacuum cleaner | Katsuhiko Yoshida, Takeshi Yamada | 2006-07-04 |
| 7047594 | Cyclonic vacuum cleaner | — | 2006-05-23 |
| 6889403 | Cyclonic vacuum cleaner | Takeshi Yamada, Shuichi Taniguchi, Toshiaki Ogawa | 2005-05-10 |