Top IPC subclasses
1
|
C03C
|
6
|
chemical composition of glasses, glazes, or vitreous enamelssurface treatment of glasssurface treatm
|
2
|
C23D
|
4
|
enamelling of, or applying a vitreous layer to, metals
|
3
|
C09D
|
3
|
coating compositions, e.g. paints, varnishes, lacquersfilling pasteschemical paint or ink removersin
|
4
|
C23G
|
2
|
cleaning or de-greasing of metallic material by chemical methods other than electrolysis
|
5
|
C23F
|
2
|
non-mechanical removal of metallic material from surfacesinhibiting corrosion of metallic materialin
|
6
|
C10M
|
1
|
lubricating compositionsuse of chemical substances either alone or as lubricating ingredients in a l
|