| Share of applications |
IPC group |
IPC description |
| 57% |
C02F7 |
Aeration of stretches of water |
| |
|
|
| 50% |
C02F1 |
Treatment of water, waste water, or sewage |
| |
|
|
| 21% |
C02F3 |
Biological treatment of water, waste water, or sewage |
| |
|
|
| 14% |
A01K63 |
Receptacles for live fish, e.g. aquaria ; Terraria |
| |
|
|
| 14% |
A61L2 |
Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor |
| |
|
|
| 14% |
E02B1 |
Equipment or apparatus for, or methods of, general hydraulic engineering |
| |
|
|
| 14% |
E02B15 |
Cleaning or keeping clear the surface of open water; Apparatus therefor |
| |
|
|
| 7% |
B01D21 |
Separation of suspended solid particles from liquids by sedimentation |
| |
|
|
| 7% |
B06B1 |
Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency |
| |
|
|
| 7% |
C02F9 |
Multistep treatment of water, waste water or sewage |
| |
|
|
| 7% |
C02F11 |
Treatment of sludge; Devices therefor |
| |
|
|
| 7% |
E02B3 |
Engineering work in connection with control or use of streams, rivers, coasts, or other marine sites ; Sealings or joints for engineering work in general |
| |
|
|
| 7% |
F04F5 |
Jet pumps, i.e. devices in which fluid flow is induced by pressure drop caused by velocity of another fluid flow |