in which the condensed system contains two hetero rings

in which the condensed system contains two hetero 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 codeC07D471/02
Official titlein which the condensed system contains two hetero rings
Display labelin which the condensed system contains two hetero rings
Total patents112

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
201513
201613
20178
201810
201917
202015
20217
20229
20237
20248
20252
20263

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 C07D471/02?
CPC C07D471/02 is the Cooperative Patent Classification code for “in which the condensed system contains two hetero rings.”
How many patents are filed under CPC C07D471/02 (in which the condensed system contains two hetero rings)?
Our database includes 112 publications tagged with this CPC code.
Is patent activity under CPC C07D471/02 growing?
Publication counts under this code: 8 in 2024 vs 2 in 2025 (latest complete years).