Inventor
Shigeo Ezaki
Inventor
Osaka, JP
Overview
Patents· 6 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B23Hprimary
B23HWorking of metal by the action of a high concentration of electric current on a workpiece using an electrode which takes the place of a tool75%
Y10TTechnical subjects covered by former us classification25%
PatentTitleYear
6,300,587'Wire electrode for electro-discharge machining and manufacturing method thereof'20015,599,633'Wire electrode for electro-discharge machining'19975,514,845'Electrode tube for electrical discharge machining and manufacturing method thereof'19965,206,480'Wire electrode for electro-discharge machining'19935,028,756'Electrode wire for electric spark cutting'19914,673,790'Copper based wire electrode for wire electro-discharge machining'1987Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1987–2001Patents assigned to SUMITOMO ELECTRIC INDUSTRIES (6)· patent assignee history
1987Based in Takatsuki, JP· patent location history
1991Patents assigned to TOKYO TUNGSTEN KK (1)· patent assignee history
1991–2001Based in Osaka, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SUMITOMO ELECTRIC INDUSTRIES | 6 | 1987–2001 |
| TOKYO TUNGSTEN KK | 1 | 1991 |
Locations
| Location | Patents | Span |
|---|---|---|
| Osaka, JP | 5 | 1991–2001 |
| Takatsuki, JP | 1 | 1987 |