Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7202438 | Electrical discharge machining apparatus | Yoshinori Asai, Hidehiko Tanaka, Takashi Yuzawa | 2007-04-10 |
| 5919381 | Bipolar electrical discharge machine which detects misfire | Akihiro Goto, Yoshio Ozaki | 1999-07-06 |
| 5869797 | Bipolar electrical discharge machine which adjusts voltage polarity based on short circuit detection | Akihiro Goto, Yoshio Ozaki | 1999-02-09 |
| 5841093 | Electrical discharge apparatus and electrical discharge machining method | — | 1998-11-24 |
| 5828027 | Electrical discharge machine with tar build-up detector | Akihiro Goto, Yoshio Ozaki | 1998-10-27 |
| 5753882 | Electrical discharge machine with pulses of both polarities | Akihiro Goto, Yoshio Ozaki | 1998-05-19 |
| 5698115 | Electrical discharge machine | Akihiro Goto, Yoshio Ozaki | 1997-12-16 |
| 5681488 | Electrical discharge machine which uses voltages of opposite polarity | Akihiro Goto, Yoshio Ozaki | 1997-10-28 |
| 5603852 | Electrical discharge machine with an opposite polarity voltage applied during an electrode jump operation | Akihiro Goto, Yoshio Ozaki | 1997-02-18 |
| 5243168 | Electric discharge machine | Takuji Magara | 1993-09-07 |
| 4185662 | Apparatus for actuating operating valve unit for winch | Masami Hashimoto, Teruo Nakahara | 1980-01-29 |