| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 9 | |
| #2 | France | 3 | |
| #3 | Switzerland | 2 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Electrical machinery and energy | |
| #3 | Basic communication technologies | |
| #4 | Optics | |
| #5 | Packaging and shipping |
| # | Technology | |
|---|---|---|
| #1 | Metalworking with concentrated electric current | |
| #2 | AC and DC conversion devices | |
| #3 | Pulse technique | |
| #4 | Optical systems | |
| #5 | Handling thin material |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ullmann Werner | 3 |
| #2 | Ullmann Werner Dipl Ing | 2 |
| #3 | Derighetti Rene | 1 |
| #4 | Modini Fredy | 1 |
| #5 | Marchesi Alberto | 1 |
| #6 | Derighetti Rene Dr Ing | 1 |
| #7 | Boccadoro Marco | 1 |
| #8 | Grauert Fritz | 1 |
| #9 | Werner Ullmann | 1 |
| #10 | Lodetti Attilio | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE4441055C1 | Measurement-based control of spark erosion machining process | |
| DE4433108A1 | Threading jet for a spark erosion cutting appts | |
| DE4432193A1 | Flushing device | |
| DE4430808A1 | Wire guide for a device for spark erosive wire cutting | |
| DE4137016A1 | Device for measuring and / or regulating the tensile force of a band-shaped or wire-shaped electrode in a spark erosion machine | |
| DE1293001B | Process for the electrical discharge machining of recesses in solid metallic bodies |