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Patent Classification Explorer PCE

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Search for IPC and CPC classification codes or keywords

B
B01
B01D
B01D 2257/00
B01D 2257/40
B01D 2257/406

CPC Subgroup Additional Only

B01D 2257/406

Ammonia

Full Title

Components to be removed > Nitrogen compounds > Ammonia

CPC B01D 2257/406

No direct equivalent in IPC

4 CPC-only subgroups

B01D 2257/404 B01D 2257/408

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

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