| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 4 | |
| #2 | United States | 4 | |
| #3 | Japan | 3 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Metalworking with concentrated electric current |
| # | Name | Total Patents |
|---|---|---|
| #1 | Kondo Iwao | 6 |
| #2 | Sasagawa Kenji | 4 |
| #3 | Iwao Kondo | 4 |
| #4 | Taoka Kenjiro | 3 |
| #5 | Kondou Iwao | 1 |
| #6 | Taoka Kenjirou | 1 |
| #7 | Kenjiro Taoka | 1 |
| #8 | Kenji Sasagawa | 1 |
| Publication | Filing date | Title |
|---|---|---|
| JPS5656351A | Controller for machining electrode of electric discharge machine | |
| CH536679A | Electro-erosion appts - with logical circuit for automatic control of operational conditions | |
| US3705286A | Electric discharge machining device | |
| US3632942A | Electrical discharge machining device using logical control | |
| US3636295A | Power source device for electrical discharge machining | |
| US3642601A | Machine for processing a piece of work by electric current |