Patent Classification Explorer PCE

DIFF Main Group

C30B 28/00

Production of homogeneous polycrystalline material with defined structure

Introduced: January 1990

IPC and CPC are identically structured here. All 3 subcodes exist in both systems.

IPC defines codes here since 1990.

Child Classifications

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C30B 28/02 directly from the solid state since 1990 IPC+CPC Available in IPC and CPC
C30B 28/04 from liquids since 1990 IPC+CPC Available in IPC and CPC
C30B 28/12 directly from the gas state since 1990 IPC+CPC Available in IPC and CPC