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DIFF Subgroup
C09K 19/42

Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40

Introduced: January 1985

Title

Titles differ between systems:

IPC: Mixtures of liquid crystal compounds covered by two or more of the preceding groups

CPC: Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40

Full Title

Full titles differ between systems:

IPC:

Liquid crystal materials > characterised by the chemical structure of the liquid crystal components > Mixtures of liquid crystal compounds covered by two or more of the preceding groups

CPC:

Liquid crystal materials > characterised by the chemical structure of the liquid crystal components > Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40

IPC and CPC are identically structured here. All 4 subcodes exist in both systems.

IPC defines codes here since 1985.

Child Classifications

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  • C09K 19/44 containing compounds with benzene rings directly linked since 1985 IPC+CPC Available in IPC and CPC
  • C09K 19/46 containing esters since 1985 IPC+CPC Available in IPC and CPC
  • C09K 19/48 containing Schiff bases since 1985 IPC+CPC Available in IPC and CPC
  • C09K 19/50 containing steroidal liquid crystal compounds since 1985 IPC+CPC Available in IPC and CPC