Inorganic substances, e.g. oligoelements

Introduced: January 2016

Title

Titles differ between systems:

IPC: Inorganic substances, e.g. oligo-elements

CPC: Inorganic substances, e.g. oligoelements

Full titles differ between systems:

IPC:

Accessory food factors for animal feeding-stuffs > Inorganic substances, e.g. oligo-elements

CPC:

Accessory food factors for animal feeding-stuffs > Inorganic substances, e.g. oligoelements

Of 5 combined children, 4 exist in both systems.

1 codes are CPC-only extensions.

IPC defines codes here since 2016.

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A23K 20/22 Compounds of alkali metals since 2016 IPC+CPC Available in IPC and CPC
A23K 20/24 Compounds of alkaline earth metals, e.g. magnesium since 2016 IPC+CPC Available in IPC and CPC
A23K 20/26 Compounds containing phosphorus since 2016 IPC+CPC Available in IPC and CPC
A23K 20/28 Silicates, e.g. perlites, zeolites or bentonites since 2016 IPC+CPC Available in IPC and CPC
A23K 20/30 CPC only CPC only

Class A23,2013–2023, worldwide · Source: EPO PATSTAT

Class A23,2013–2023, worldwide · Source: EPO PATSTAT