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PCE
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DIFF Subgroup
C30B 15/22

Stabilisation or shape controlling of the molten zone near the pulled crystal; Controlling the section of the crystal

Introduced: January 1980

Full Title

Full titles differ between systems:

IPC:

Single-crystal growth by pulling from a melt, e.g. Czochralski method > Controlling or regulating > Stabilisation or shape controlling of the molten zone near the pulled crystal; Controlling the section of the crystal

CPC:

Single-crystal growth by pulling from a melt, e.g. Czochralski method (under a protective fluid C30B27/00) > Controlling or regulating (controlling or regulating in general G05) > Stabilisation or shape controlling of the molten zone near the pulled crystal; Controlling the section of the crystal

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

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1980.

Child Classifications

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  • C30B 15/24 using mechanical means, e.g. shaping guides (shaping dies for edge-defined film-fed crystal growth C30B15/34) since 1980 IPC+CPC Available in IPC and CPC
  • C30B 15/26 using television detectors; using photo or X-ray detectors since 1980 IPC+CPC Available in IPC and CPC
  • C30B 15/28 using weight changes of the crystal or the melt, e.g. flotation methods since 1980 IPC+CPC Available in IPC and CPC