| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 8 | |
| #2 | Switzerland | 3 | |
| #3 | Austria | 1 | |
| #4 | EPO (European Patent Office) | 1 | |
| #5 | Netherlands | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Agriculture | |
| #3 | Environmental technology | |
| #4 | Electrical machinery and energy | |
| #5 | Foods and drinks |
| # | Technology | |
|---|---|---|
| #1 | Mixing | |
| #2 | Dynamo-electric machines | |
| #3 | Dairy products production | |
| #4 | Climate change mitigation in wastewater treatment | |
| #5 | Water treatment | |
| #6 | Planting | |
| #7 | Chemical or physical processes | |
| #8 | Cleaning | |
| #9 | Cocoa and sweets | |
| #10 | Sucrose production |
| # | Name | Total Patents |
|---|---|---|
| #1 | Stelzer Erwin | 8 |
| #2 | Stelzer Erwin Ing Grad | 2 |
| #3 | Erwin Stelzer | 2 |
| #4 | Poepel Franz Prof Dr Ing | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE3305301A1 | Drive device | |
| DE3241209A1 | Sugar boiling apparatus and stirring process | |
| EP0063171A2 | Mixing apparatus | |
| CH619154A5 | Device for admixing a liquid with gas. |