| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Brazil | 4 | |
| #2 | EPO (European Patent Office) | 3 | |
| #3 | Republic of Korea | 2 | |
| #4 | United States | 2 | |
| #5 | Mexico | 1 | |
| #6 | Russian Federation | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Punching metal | |
| #2 | Pipes | |
| #3 | Making metal sheets |
| # | Name | Total Patents |
|---|---|---|
| #1 | Schaefer August Wilhelm | 5 |
| #2 | August Wilhelm Schäfer | 4 |
| #3 | Schäfer August Wilhelm | 2 |
| #4 | Schäfer August-Wilhelm | 1 |
| #5 | August-Wilhelm Schäfer | 1 |
| Publication | Filing date | Title |
|---|---|---|
| RU2636427C1 | Method of induction bending of pressure-resistant pipe with very thick wall and large diametre | |
| KR20170141766A | Induction bending molding method of pressure-resistant pipe having thick wall thickness and large diameter and induction pipe bending device |