Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5637240 | Electrical discharge machining method and electrical discharge machining apparatus | Akiyoshi Kawahara | 1997-06-10 |
| 5486765 | Insulating condition detecting apparatus for a wire-cut electrical discharge machine | Akihiro Sakurai, Akiyoshi Kawahara | 1996-01-23 |
| 5323325 | Method of displaying an operation history of a machine | — | 1994-06-21 |
| 4689457 | Wire-cut electric discharge machine | Yuji Okuyama, Masaya Ito | 1987-08-25 |
| 4681997 | Wire-cut, electric discharge machining power supply unit | Michiya Inoue, Haruki Obara | 1987-07-21 |
| 4614854 | Wire EDM control circuit for rough and finished machining | Haruki Obara | 1986-09-30 |
| 4590353 | Electric discharge machining power source | Haruki Obara, Yuji Okuyama, Akihiro Sakurai | 1986-05-20 |
| 4469927 | Power source arrangement for wire-cut, electric discharge machining | Haruki Obara | 1984-09-04 |