having an aryl radical as the second substituent in position 4

having an aryl radical as the second substituent in position 4 · 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 codeC07D211/52
Official titlehaving an aryl radical as the second substituent in position 4
Display labelhaving an aryl radical as the second substituent in position 4
Total patents72

Filing trend

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

Filing activity over the last five years is rapidly growing.

Patents filed per year
YearPatents
201515
201610
201714
20186
20196
20205
20211
20224
20234
20242
20255

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 C07D211/52?
CPC C07D211/52 is the Cooperative Patent Classification code for “having an aryl radical as the second substituent in position 4.”
How many patents are filed under CPC C07D211/52 (having an aryl radical as the second substituent in position 4)?
Our database includes 72 publications tagged with this CPC code.
Is patent activity under CPC C07D211/52 growing?
Publication counts under this code: 2 in 2024 vs 5 in 2025 (latest complete years).