with halogen atoms attached to the two other ring carbon atoms

with halogen atoms attached to the two other ring carbon atoms · 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 codeC07D251/44
Official titlewith halogen atoms attached to the two other ring carbon atoms
Display labelwith halogen atoms attached to the two other ring carbon atoms
Total patents32

Filing trend

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

Filing activity over the last five years is growing.

Patents filed per year
YearPatents
20154
20162
20175
20183
20191
20203
20212
20224
20234
20241
20253

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 C07D251/44?
CPC C07D251/44 is the Cooperative Patent Classification code for “with halogen atoms attached to the two other ring carbon atoms.”
How many patents are filed under CPC C07D251/44 (with halogen atoms attached to the two other ring carbon atoms)?
Our database includes 32 publications tagged with this CPC code.
Is patent activity under CPC C07D251/44 growing?
Publication counts under this code: 1 in 2024 vs 3 in 2025 (latest complete years).