| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Denmark | 3 | |
| #2 | United Kingdom | 2 | |
| #3 | United States | 2 | |
| #4 | Austria | 1 | |
| #5 | Australia | 1 | |
| #6 | Germany | 1 | |
| #7 | EPO (European Patent Office) | 1 | |
| #8 | Spain | 1 | |
| #9 | Sweden | 1 | |
| #10 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Environmental technology | |
| #2 | Measurement | |
| #3 | Thermal processes | |
| #4 | Machines | |
| #5 | Mechanical elements | |
| #6 | Engines, pumps and turbines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Nielsen Inge | 9 |
| #2 | Hansen Erland Falk | 2 |
| #3 | Nielsen Erik | 1 |
| #4 | Nielsen I | 1 |
| #5 | Hansen Erland F | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB9006721D0 | Central heating system or similar closed heating system and method for controlling the fluid-tightness thereof | |
| US5035575A | Yawing system for a wind mill | |
| DK50888D0 | Crown system for a windmill | |
| DK484687A | Central heating and water systems and procedures to control its tightness | |
| DE3790014C2 | Monitoring system for water leakage in central heating system | |
| DK358786D0 | Water installation and procedures for control thereof |