Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides

Introduced: September 1968

Title

Titles differ between systems:

IPC: Alloys based on carbides, oxides, borides, nitrides or silicides, e.g. cermets, or other metal compounds, e. g. oxynitrides, sulfides

CPC: Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides

Full titles differ between systems:

IPC:

Alloys based on carbides, oxides, borides, nitrides or silicides, e.g. cermets, or other metal compounds, e. g. oxynitrides, sulfides

CPC:

Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides

Of 6 combined children, 5 exist in both systems.

1 codes are CPC-only extensions.

IPC defines codes here since 1985.

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C22C 29/005 CPC only CPC only
C22C 29/02 based on carbides or carbonitrides since 1985 IPC+CPC Available in IPC and CPC
C22C 29/12 based on oxides since 1985 IPC+CPC Available in IPC and CPC
C22C 29/14 based on borides since 1985 IPC+CPC Available in IPC and CPC
C22C 29/16 based on nitrides since 1985 IPC+CPC Available in IPC and CPC
C22C 29/18 based on silicides since 1985 IPC+CPC Available in IPC and CPC

Class C22,2013–2023, worldwide · Source: EPO PATSTAT

Class C22,2013–2023, worldwide · Source: EPO PATSTAT