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Patent Classification Explorer PCE

Search Classifications

Search for IPC and CPC classification codes or keywords

C
C09
C09K
C09K 2109/00

CPC Main Group Additional Only

C09K 2109/00

pH regulation

CPC C09K 2109/00

No direct equivalent in IPC

13 CPC-only subgroups

7 IPC-only subgroups

C09K 2107/00 C09K 2111/00

Data: WIPO (IPC), EPO/USPTO (CPC) — CC BY 4.0

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