| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 12 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Environmental technology | |
| #3 | Mechanical elements | |
| #4 | Electrical machinery and energy | |
| #5 | Chemical engineering | |
| #6 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Turning | |
| #2 | Shafts | |
| #3 | Internal-combustion piston engines | |
| #4 | Water treatment | |
| #5 | Lighting device details | |
| #6 | Climate change mitigation in wastewater treatment | |
| #7 | Mixing |
| # | Name | Total Patents |
|---|---|---|
| #1 | Riebel Felix | 12 |
| #2 | Oezcanli Mustafa | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE3434089A1 | Cutting-off turning tool | |
| DE2410295A1 | Lathe attachment for producing centre holes in workpieces - holds centre drill between the tailstock and workpiece face | |
| DE2357683A1 | Aeration of river water - using a compressor driven by the energy of the river current | |
| DE2341999A1 | Multiple tool holder used for trepanning or groove cutting - has one tool to cut a narrow groove and another to cut the edges of the first |