Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7202439 | Small-hole electrical discharge machining device and multiple diesinking-and-small-hole electrical discharge machining device, and method for multiple diesinking-and-small-hole electrical discharge machining with the same device | Hiroshi Ishiwata | 2007-04-10 |
| 6933456 | Small hole electrical discharge machining method and small hole electrical discharge machining apparatus and electrode inserting method and electrode inserting apparatus | — | 2005-08-23 |
| 6806435 | Small hole electric discharge machine drill provided with depth-specific processing means | Hiroshi Ishiwata, Tomoshige Ishiwata | 2004-10-19 |
| 6576858 | Small hole electrical discharge machining method and small hole electrical discharge machining apparatus | — | 2003-06-10 |
| 5142116 | Wire cutting electric discharge machine | Yasunori Ono | 1992-08-25 |
| 5130508 | Wire threading method for a wire discharge machine | Masahito Umetsu | 1992-07-14 |
| 5064983 | Wire cutting electric discharge machine | Yasunori Ono | 1991-11-12 |
| 4675492 | Nozzle elevating device for a wire cutting electric discharge machine | Yasunori Ono | 1987-06-23 |