Top IPC subclasses
1
|
C02F
|
35
|
Treatment of water, waste water, sewage, or sludge
|
2
|
B01D
|
7
|
Separation
|
3
|
C12M
|
3
|
apparatus for enzymology or microbiology
|
4
|
B09B
|
2
|
disposal of solid waste
|
5
|
C01C
|
1
|
ammoniacyanogencompounds thereof
|
6
|
G01F
|
1
|
measuring volume, volume flow, mass flow, or liquid levelmetering by volume
|
7
|
C12F
|
1
|
recovery of by-products of fermented solutionsdenaturing of, or denatured, alcohol
|
8
|
C23F
|
1
|
non-mechanical removal of metallic material from surfacesinhibiting corrosion of metallic materialin
|
9
|
C09C
|
1
|
treatment of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling
|
10
|
B03C
|
1
|
magnetic or electrostatic separation of solid materials from solid materials or fluidsseparation by
|