Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9333575 | Wire electric discharge machine and wire electrode removal device | Yoji Nakajima | 2016-05-10 |
| 9321114 | Wire electric-discharge machining device and wire-electrode removing device configured to remove cut wire-electrode | Yoji Nakajima | 2016-04-26 |
| 8058582 | Electrical discharge machining apparatus and electrical discharge machining method | Hisakatsu Kawarai, Yoji Nakajima, Hisashi Yamada | 2011-11-15 |
| 7795558 | Electric discharge machine and electric discharge machining method | Yoji Nakajima, Hisakatsu Kawarai, Hisashi Yamada | 2010-09-14 |
| 7737380 | Electrical-discharge machining apparatus and method and apparatus for dielectric-fluid quality control | Hisakatsu Kawarai, Seiji Sato | 2010-06-15 |