| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 10 | |
| #2 | Denmark | 6 | |
| #3 | EPO (European Patent Office) | 4 | |
| #4 | Italy | 3 | |
| #5 | Spain | 2 | |
| #6 | United Kingdom | 1 | |
| #7 | Portugal | 1 | |
| #8 | Turkey | 1 | |
| #9 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Control |
| # | Technology | |
|---|---|---|
| #1 | Compressed gas holders | |
| #2 | Systems controlling non-electric variables | |
| #3 | Pipes | |
| #4 | Venting or aerating devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hennecke Ernst | 12 |
| #2 | Tolde Helmut | 5 |
| #3 | Hennecke E | 2 |
| #4 | Tolde Helmuth | 1 |
| #5 | Rackow Willy | 1 |
| Publication | Filing date | Title |
|---|---|---|
| EP0252379A1 | Valve lifter | |
| DE3634966A1 | Filling fitting | |
| ZA8406456B | Adapter | |
| DE3241843A1 | GAS BOTTLE VALVE | |
| EP0056071A1 | High-pressure connection | |
| DE2830147B1 | Reducing valve | |
| DE2648110A1 | Socket connection for liquefied gas bottles - has radial piston valve actuated by rocking lever controlled by ratchet (NL 25.4.78) | |
| DE2523845B1 | Two stage pressure reducing valve for bottled gas - ensures that any leakage from main stage is blocked by second stage poppet held rigidly against seat by lever | |
| DE1946055A1 | Adjustable pressure control device for extracting gas from high pressure gas bottles | |
| DE1267926B | Multi-stage diaphragm-controlled pressure reducing valve for gaseous media | |
| DE1248406B | Multi-stage diaphragm-controlled reducing valve for gaseous media |