Top IPC subclasses
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1
|
B01D
|
37
|
Separation
|
|
2
|
C12G
|
22
|
Wine; other alcoholic beverages; preparation thereof
|
|
3
|
A23L
|
12
|
Foods, foodstuffs, or non-alcoholic beverages, not covered by subclasses A21D or A23B-A23J; their preparation or treatment, e.g. cooking, modification of nutritive qualities, physical treatment; preservation of foods or foodstuffs, in general
|
|
4
|
A62D
|
8
|
chemical means for extinguishing firesprocesses for making harmful chemical substances harmless, or
|
|
5
|
C01G
|
7
|
Compounds containing metals not covered by subclasses C01D or C01F
|
|
6
|
B09B
|
6
|
disposal of solid waste
|
|
7
|
C07C
|
5
|
Acyclic or carbocyclic compounds
|
|
8
|
F23G
|
5
|
Cremation furnaces; consuming waste or low grade fuels by combustion
|
|
9
|
C12H
|
5
|
pasteurisation, sterilisation, preservation, purification, clarification, ageing of alcoholic bevera
|
|
10
|
A01C
|
3
|
Planting; sowing; fertilising
|
|
11
|
B05D
|
3
|
processes for applying liquids or other fluent materials to surfaces, in general
|
|
12
|
G01N
|
3
|
Investigating or analysing materials by determining their chemical or physical properties
|
|
13
|
C09C
|
3
|
treatment of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling
|
|
14
|
A01K
|
3
|
animal husbandrycare of birds, fishes, insectsfishingrearing or breeding animals, not otherwise prov
|
|
15
|
C09B
|
2
|
organic dyes or closely-related compounds for producing dyesmordantslakes
|
|
16
|
C12F
|
2
|
recovery of by-products of fermented solutionsdenaturing of, or denatured, alcohol
|
|
17
|
C05F
|
2
|
organic fertilisers not covered by subclasses , , e.g. fertilisers from waste or refuse
|
|
18
|
C10L
|
2
|
fuels not otherwise provided fornatural gassynthetic natural gas obtained by processes not covered b
|
|
19
|
A01G
|
2
|
Horticulture; cultivation of vegetables, flowers, rice, fruit, vines, hops, or seaweed; forestry; watering
|
|
20
|
C04B
|
2
|
Lime; magnesia; slag; cements; compositions thereof, e.g. mortars, concrete or like building materials; artificial stone; ceramics; refractories; treatment of natural stone
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