Patent Classification Explorer PCE

DIFF Subgroup

C08G 18/83

Chemically modified polymers

Introduced: July 1974

Full Title

Polymeric products of isocyanates or isothiocyanates > with compounds having active hydrogen > Chemically modified polymers

CPC subdivides this area 3x more granularly than IPC with 6 additional codes.

6 codes are CPC-only extensions.

IPC defines codes here since 1974.

Child Classifications

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C08G 18/831 +1 CPC CPC only CPC only
C08G 18/833 CPC only CPC only
C08G 18/834 +1 CPC CPC only CPC only
C08G 18/836 CPC only CPC only
C08G 18/837 CPC only CPC only
C08G 18/838 CPC only CPC only
C08G 18/84 by aldehydes since 1974 IPC+CPC Available in IPC and CPC
C08G 18/85 by azo compounds since 1974 IPC+CPC Available in IPC and CPC
C08G 18/86 by peroxides since 1974 IPC+CPC Available in IPC and CPC
C08G 18/87 by sulfur since 1974 IPC+CPC Available in IPC and CPC