DIFF Subgroup
C30B 13/28 Controlling or regulating
Introduced: January 1980
Full Title
Full titles differ between systems:
IPC:
Single-crystal growth by zone-melting; Refining by zone-melting > Controlling or regulating
CPC:
Single-crystal growth by zone-melting; Refining by zone-melting (C30B17/00 takes precedence; by changing the cross-section of the treated solid C30B15/00; under a protective fluid C30B27/00; for the growth of homogeneous polycrystalline material with defined structure C30B28/00) > Controlling or regulating
Of 2 combined children, 1 exist in both systems.
1 codes are CPC-only extensions.
IPC defines codes here since 1980.
Child Classifications
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- C30B 13/30 Stabilisation or shape controlling of the molten zone, e.g. by concentrators, by electromagnetic fields; Controlling the section of the crystal since 1980 IPC+CPC Available in IPC and CPC