Issued Patents All Time
Showing 1–25 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8814481 | Oil supply device for hole cutting apparatus | Kazuyoshi Inagaki | 2014-08-26 |
| 8807886 | Hole cutter | Yasuo Imai | 2014-08-19 |
| 8491235 | Rail drilling machine | Kazuyoshi Inagaki | 2013-07-23 |
| D656168 | Hole cutter | — | 2012-03-20 |
| D647546 | Hole cutter | — | 2011-10-25 |
| D647116 | Hole cutter tip | — | 2011-10-18 |
| D647117 | Hole cutter tip | — | 2011-10-18 |
| 7682111 | Bore cutter | — | 2010-03-23 |
| 7648315 | Cutter holder | Kazuyoshi Inagaki | 2010-01-19 |
| 7632049 | Hole cutter | Kazuyoshi Inagaki | 2009-12-15 |
| 7568531 | Gear transmission device for power tool | — | 2009-08-04 |
| D560698 | Hole cutter | — | 2008-01-29 |
| D560699 | Hole cutter | — | 2008-01-29 |
| D549249 | End mill | — | 2007-08-21 |
| 6974284 | Cutter driving apparatus in boring machine | — | 2005-12-13 |
| 6823855 | Slingshot, slingshot releaser, and releaser-incorporated slingshot device | — | 2004-11-30 |
| 6712056 | Slingshot releaser | — | 2004-03-30 |
| 6676711 | Hole cutter | — | 2004-01-13 |
| 6588993 | Cutting tool, tool holder and tool assembly | — | 2003-07-08 |
| 6314853 | Portable cutting apparatus | Kazuyoshi Inagaki | 2001-11-13 |
| 5988956 | Hole cutter | Yasuo Imai | 1999-11-23 |
| 5938378 | Apparatus for boring webs of steel sections | Chikayuki Urashima, Taro Ishikawa | 1999-08-17 |
| 5240357 | Annular hole cutter | — | 1993-08-31 |
| 5211635 | Drill with trimming attachment | Takashi Omi | 1993-05-18 |
| 5092716 | Drill and method for using the same | — | 1992-03-03 |