Top IPC subclasses
1
|
C05C
|
4
|
nitrogenous fertilisers
|
2
|
C05D
|
3
|
inorganic fertilisers not covered by subclasses , fertilisers producing carbon dioxide
|
3
|
A01C
|
2
|
Planting; sowing; fertilising
|
4
|
A01P
|
1
|
Biocidal, pest repellant, pest attractant or plant growth regulatory activity of chemical compounds or preparations
|