| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 9 | |
| #2 | EPO (European Patent Office) | 3 | |
| #3 | Austria | 1 | |
| #4 | China | 1 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Engines, pumps and turbines | |
| #3 | Environmental technology | |
| #4 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Marine propulsion | |
| #2 | Reduction of greenhouse gas emissions | |
| #3 | Machines for liquids | |
| #4 | Steam turbines | |
| #5 | Pistons and sealings | |
| #6 | Frames | |
| #7 | Non-positive-displacement pumps |
| # | Name | Total Patents |
|---|---|---|
| #1 | Perfahl Herbert | 4 |
| #2 | Metzger Walter | 3 |
| #3 | Sturmhoefel Ulrich | 2 |
| #4 | Zehner Donald E | 1 |
| #5 | Fisher Jun Richard K | 1 |
| #6 | Dietz Werner | 1 |
| #7 | Seifarth Randy V | 1 |
| #8 | Gros Harald | 1 |
| #9 | Donelson Richard K | 1 |
| #10 | Grosse Gilbert | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE19718682C1 | Cycloidal propeller | |
| DE19717175A1 | Water jet propulsion for a watercraft | |
| DE19645198A1 | Cycloidal ship propeller | |
| DE19643278C1 | Cycloidal propeller to drive ship | |
| DE19619317A1 | Impeller for an open jet tube | |
| DE19611677A1 | Non-contact seal with a floating ring | |
| DE19603484A1 | Device for reducing the noise of a ship's propeller | |
| DE19602043C1 | Cycloidal propeller for ship drive |