Issued Patents All Time
Showing 1–25 of 47 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12403536 | Diameter-enlarged hole portion forming device | — | 2025-09-02 |
| 12397473 | Boring device | — | 2025-08-26 |
| 11453071 | Core cutter and cutting method using the same | — | 2022-09-27 |
| 11213898 | Drilling device for enlarged-diameter hole | — | 2022-01-04 |
| 10744677 | Hole drilling device for forming expanded-diameter hole portion | — | 2020-08-18 |
| 10335980 | Dust suction drill and dust suction unit | — | 2019-07-02 |
| 10132344 | Anchor bolt | — | 2018-11-20 |
| 9950445 | Hole-drilling device for drilling hole with expanded diameter hole portion | — | 2018-04-24 |
| 9925691 | Drill bit | — | 2018-03-27 |
| 9463507 | Method for producing hard tip | — | 2016-10-11 |
| 9457491 | Coolant supply device and electric drill unit provided with coolant supply device | — | 2016-10-04 |
| 9162371 | Drill bit | — | 2015-10-20 |
| 8794880 | Core cutter | — | 2014-08-05 |
| 8613577 | Core drill | — | 2013-12-24 |
| 8608413 | Shank attachment device | — | 2013-12-17 |
| 8419321 | Water feed apparatus for core drill | — | 2013-04-16 |
| 8371775 | Shank attachment structure | — | 2013-02-12 |
| 8113747 | Drill dust collector | — | 2012-02-14 |
| 8100612 | Core drill | — | 2012-01-24 |
| 7891444 | Drill bit | — | 2011-02-22 |
| 7611312 | Core cutter | — | 2009-11-03 |
| 7540341 | Drill bit | — | 2009-06-02 |
| 7357705 | Diamond disk | — | 2008-04-15 |
| 7341120 | Blade edge structure for core drill | — | 2008-03-11 |
| D562514 | Dust collecting pad | — | 2008-02-19 |