Esters

Introduced: July 1974

Full Title

Full titles differ between systems:

IPC:

Preparation of chemical derivatives of starch > Esters

CPC:

Preparation of derivatives of starch (derivatives of amylose C08B33/00; derivatives of amylopectin C08B35/00) > Esters

IPC and CPC are identically structured here. All 2 subcodes exist in both systems.

IPC defines codes here since 1974.

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C08B 31/04 of organic acids since 1974 IPC+CPC Available in IPC and CPC
C08B 31/06 of inorganic acids since 1974 +2 CPC IPC+CPC Available in IPC and CPC