| Share of applications |
IPC group |
IPC description |
| 50% |
C02F7 |
Aeration of stretches of water |
| |
|
|
| 23% |
B01F3 |
Mixing, e.g. dispersing, emulsifying, according to the phases to be mixed |
| |
|
|
| 17% |
C02F1 |
Treatment of water, waste water, or sewage |
| |
|
|
| 16% |
C02F3 |
Biological treatment of water, waste water, or sewage |
| |
|
|
| 5% |
B01F5 |
Flow mixers ; Mixers for falling materials, e.g. solid particles |
| |
|
|
| 5% |
C02B1 |
|
| |
|
|
| 3% |
A01K63 |
Receptacles for live fish, e.g. aquaria ; Terraria |
| |
|
|
| 3% |
B63B35 |
Vessels or like floating structures adapted for special purposes |
| |
|
|
| 3% |
C02C1 |
|
| |
|
|
| 2% |
C02F |
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE |
| |
|
|
| 2% |
C02B9 |
|
| |
|
|
| 2% |
C02F11 |
Treatment of sludge; Devices therefor |
| |
|
|
| 2% |
E02B15 |
Cleaning or keeping clear the surface of open water; Apparatus therefor |
| |
|
|
| 2% |
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 |
| |
|
|
| 1% |
A01K61 |
Culture of fish, mussels, crayfish, lobsters, sponges, pearls, or the like |