IPC Subgroup
C02F 11/131 using electromagnetic or ultrasonic waves
Introduced: January 2019
Full Title
Treatment of sludge; Devices therefor > by de-watering, drying or thickening > by heating > using electromagnetic or ultrasonic waves
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- Subclass:
- TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE