| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 7 | |
| #2 | France | 2 | |
| #3 | Sweden | 2 | |
| #4 | Brazil | 1 | |
| #5 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Chemical engineering | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Non-positive-displacement pumps | |
| #2 | Shaping of plastics | |
| #3 | Separation | |
| #4 | Internal-combustion piston engines | |
| #5 | Cylinders for combustion engines | |
| #6 | Cleaning |
| # | Name | Total Patents |
|---|---|---|
| #1 | Karberg Erik Dipl Ing | 3 |
| #2 | Peters U | 3 |
| #3 | Peters Uwe | 2 |
| #4 | Peters Uwe Ing Grad | 1 |
| #5 | Jensen Carl Christian | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE19847632A1 | Method of making a ring fan | |
| DE3135813A1 | Filtration appliance for diesel engine lubrication oil | |
| DE2901206A1 | Double filter element - with peripheral joint of filter discs around carrier formed by bonding or welding | |
| DE2812331A1 | Double filter for liquids - with small prefilter for coarse in series with depth filter for finest particles | |
| DE2439767A1 | BLADE WHEEL FOR AXIAL FAN | |
| DE2113189A1 | Fan wheel blade for axial fans and process for their production |