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substituted by -C(=O)-

substituted by -C(=O)- · Cooperative Patent Classification (CPC)

Chemical and metallurgical processes, compounds, and materials.

Related technology areas

Mapped technology topics for this CPC code.

Year-over-year patent counts classified under this CPC code.

Filing activity appears stable based on the most recent years.

Patents filed per year
Year	Patents
2020	1
2022	1

Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.