Top IPC subclasses
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1
|
C02F
|
7
|
Treatment of water, waste water, sewage, or sludge
|
|
2
|
F23D
|
4
|
burners
|
|
3
|
C25B
|
3
|
Electrolytic or electrophoretic processes for the production of compounds or non- metals; apparatus therefor
|
|
4
|
F23C
|
2
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methods or apparatus for combustion using fluent fuel
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|
5
|
F02M
|
2
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supplying combustion engines in general with combustible mixtures or constituents thereof
|
|
6
|
B01J
|
2
|
Chemical or physical processes, e.g. catalysis, colloid chemistry; their relevant apparatus
|
|
7
|
A61N
|
1
|
electrotherapymagnetotherapyradiation therapyultrasound therapy
|
|
8
|
H01F
|
1
|
magnetsinductancestransformersselection of materials for their magnetic properties
|
|
9
|
A61H
|
1
|
physical therapy apparatus, e.g. devices for locating or stimulating reflex points in the bodyartifi
|
|
10
|
G05B
|
1
|
control or regulating systems in generalfunctional elements of such systemsmonitoring or testing arr
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