Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D1030468 | Bolt head for lifting clamp | Rika Suzuki | 2024-06-11 |
| D1003683 | Lifting clamp | Rika Suzuki, Shigeo Terai | 2023-11-07 |
| D1003703 | Lifting clamp | Rika Suzuki | 2023-11-07 |
| D987423 | Lifting clamp | Rika Suzuki, Shigeo Terai | 2023-05-30 |
| 10486948 | Rope hoist | Fujito Yudate | 2019-11-26 |
| 10273128 | Rope hoist | — | 2019-04-30 |
| 10053342 | Chain block | Kazumitsu Ishikawa, Hiroki Sano | 2018-08-21 |
| 9950904 | Hook block and rope hoist | — | 2018-04-24 |
| 9926176 | Chain block | — | 2018-03-27 |
| 9802799 | Chain block | Kazumitsu Ishikawa, Hiroki Sano | 2017-10-31 |
| D789016 | Hoist | Fujito Yudate | 2017-06-06 |
| 9586795 | Chain block and load chain | Kazumistu Ishikawa | 2017-03-07 |
| D704412 | Chain hoist | Kazumitsu Ishikawa, Hiroki Sano, Shigeo Terai | 2014-05-06 |
| D704413 | Chain hoist | Kazumitsu Ishikawa, Hiroki Sano, Shigeo Terai | 2014-05-06 |
| D704414 | Chain hoist | Kazumitsu Ishikawa, Hiroki Sano, Shigeo Terai | 2014-05-06 |
| D704415 | Chain hoist | Kazumitsu Ishikawa, Hiroki Sano, Shigeo Terai | 2014-05-06 |
| D704411 | Chain hoist | Kazumitsu Ishikawa, Hiroki Sano, Shigeo Terai | 2014-05-06 |