having doubly-bound carbon atoms of hydrazone groups bound to carbon atoms of six-membered aromatic rings

having doubly-bound carbon atoms of hydrazone groups bound to carbon atoms of six-membered aromatic rings · 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 codeC07C251/86
Official titlehaving doubly-bound carbon atoms of hydrazone groups bound to carbon atoms of six-membered aromatic rings
Display labelhaving doubly-bound carbon atoms of hydrazone groups bound to carbon atoms of six-membered aromatic rings
Total patents147

Filing trend

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

Filing activity over the last five years is rapidly declining.

Patents filed per year
YearPatents
201520
201613
201716
201813
201914
202021
202113
202220
20235
20247
20254
20261

Representative patents

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

Frequently asked questions

Answers are generated from the same data shown on this page.

What is CPC C07C251/86?
CPC C07C251/86 is the Cooperative Patent Classification code for “having doubly-bound carbon atoms of hydrazone groups bound to carbon atoms of six-membered aromatic rings.”
How many patents are filed under CPC C07C251/86 (having doubly-bound carbon atoms of hydrazone groups bound to carbon atoms of six-membered aromatic rings)?
Our database includes 147 publications tagged with this CPC code.
Is patent activity under CPC C07C251/86 growing?
Publication counts under this code: 7 in 2024 vs 4 in 2025 (latest complete years).