Issued Patents All Time
Showing 26–48 of 48 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5422455 | Electrical discharge machine with secondary electrode for corrosion prevention | Seiji Sato, Hisashi Yamada | 1995-06-06 |
| 5418344 | Method and apparatus for wire-cutting electrical discharge machining of a corner | Hisahi Yamada | 1995-05-23 |
| 5416290 | Electric discharge machine power supply circuit | Hisashi Yamada | 1995-05-16 |
| 5315088 | Electric discharge machining apparatus with switch connection between workpiece and mount | Hisashi Yamada | 1994-05-24 |
| 5254826 | Contact detecting device for positioning relatively movable elements | Munenori Kimura | 1993-10-19 |
| 5243168 | Electric discharge machine | Mitsuyoshi Wada | 1993-09-07 |
| 5237145 | Wire cut electric discharge machining method | Takeshi Iwasaki, Toshio Suzuki, Masahiro Yamamoto | 1993-08-17 |
| 5233148 | Electrical discharge machine with machining gap voltage control | Hisashi Yamada, Yasushi Endou | 1993-08-03 |
| 5233147 | Wire-cut electric discharge machine | — | 1993-08-03 |
| 5189276 | Method and apparatus for treating the dielectric used in electrical discharge machining | — | 1993-02-23 |
| 5183986 | Wire-type electric discharge machining system capable magnetically of collecting material that has been removed from a workpiece and confirming the magnetic attraction | Masahiro Yamamoto | 1993-02-02 |
| 5177334 | Wire cut electric discharge machining apparatus | Yoshio Shibata, Masahiro Yamamoto, Kazuo Tsurumoto | 1993-01-05 |
| 5149931 | Power source for electric discharge machining | — | 1992-09-22 |
| 5118915 | Electric discharge machine | — | 1992-06-02 |
| 5073691 | Wire electrode feeding device in wire cut electric discharge machine | Takeshi Iwasaki, Toshio Suzuki, Masahiro Yamamoto | 1991-12-17 |
| 5064984 | Power supply unit electric discharge machining apparatus | Masahiro Yamamoto | 1991-11-12 |
| 5021622 | Wire cut electrical discharge machine | Toshio Suzuki | 1991-06-04 |
| 5006692 | Wire electrode supplying device for use in a wire cut electric discharge machining apparatus | Takeshi Iwasaki, Toshio Suzuki, Masahiro Yamamoto | 1991-04-09 |
| 5001321 | Wire electrode supplying device for use in a wire cut electric discharge machining apparatus | Takeshi Iwasaki, Toshio Suzuki, Masahiro Yamamoto | 1991-03-19 |
| 4885449 | Electric discharge machine | Toshio Suzuki | 1989-12-05 |
| 4837415 | Wire electrode type electric discharge machining apparatus | Toshio Suzuki | 1989-06-06 |
| 4698477 | Electrical discharge machining apparatus with forced cooling system | Jun Aramaki, Toshiharu Karashima, Minoru Ushida | 1987-10-06 |
| 4631382 | Bed for electrical discharge machining apparatus | Tokio Fukunaga, Shigekazu Sakabe, Jun Aramaki, Toshiharu Karashima, Minoru Ushida | 1986-12-23 |