Thermal after-treatment of glass products not provided for in groups , C03B25/00 - C03B31/00 , e.g. crystallisation, eliminating gas inclusions or other impurities;

Introduced: July 1974

Title

Titles differ between systems:

IPC: Thermal after-treatment of glass products not provided for in groups , e.g. crystallisation, eliminating gas inclusions or other impurities

CPC: Thermal after-treatment of glass products not provided for in groups , C03B25/00 - C03B31/00 , e.g. crystallisation, eliminating gas inclusions or other impurities;

Full Title

Full titles differ between systems:

IPC:

Thermal after-treatment of glass products not provided for in groups , e.g. crystallisation, eliminating gas inclusions or other impurities

CPC:

Thermal after-treatment of glass products not provided for in groups , C03B25/00 - C03B31/00 , e.g. crystallisation, eliminating gas inclusions or other impurities;

Of 2 combined children, 1 exist in both systems.

1 codes are CPC-only extensions.

IPC defines codes here since 1990.

Child Classifications

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C03B 32/005 CPC only CPC only
C03B 32/02 Thermal crystallisation, e.g. for crystallising glass bodies into glass-ceramic articles since 1990 IPC+CPC Available in IPC and CPC