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by reactions not involving carboxylic acid anhydride groups

by reactions not involving carboxylic acid anhydride groups · 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 codeC07C51/567
Official titleby reactions not involving carboxylic acid anhydride groups
Display labelby reactions not involving carboxylic acid anhydride groups
Total patents9

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
20152
20182
20193
20201
20211

Representative patents

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