[b, e]- or [b, f]-condensed with six-membered rings

[b, e]- or [b, f]-condensed with six-membered 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 codeC07D243/38
Official title[b, e]- or [b, f]-condensed with six-membered rings
Display label[b, e]- or [b, f]-condensed with six-membered rings
Total patents40

Filing trend

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

Filing activity over the last five years is stable.

Patents filed per year
YearPatents
20151
20171
20186
20193
20206
20216
20222
20237
20243
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 C07D243/38?
CPC C07D243/38 is the Cooperative Patent Classification code for “[b, e]- or [b, f]-condensed with six-membered rings.”
How many patents are filed under CPC C07D243/38 ([b, e]- or [b, f]-condensed with six-membered rings)?
Our database includes 40 publications tagged with this CPC code.
Is patent activity under CPC C07D243/38 growing?
Publication counts under this code: 3 in 2024 vs 5 in 2025 (latest complete years).