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Anhydrides

Anhydrides · Cooperative Patent Classification (CPC)

Chemical and metallurgical processes, compounds, and materials.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeC08F20/08
Official titleAnhydrides
Display labelAnhydrides
Total patents20

Filing trend

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

Filing activity over the last five years is declining.

Patents filed per year
YearPatents
20163
20171
20182
20192
20204
20213
20221
20231
20243

Representative patents

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