directly linked by a ring-member-to-ring-member bond

directly linked by a ring-member-to-ring-member bond · 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 codeC07D419/04
Official titledirectly linked by a ring-member-to-ring-member bond
Display labeldirectly linked by a ring-member-to-ring-member bond
Total patents27

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
20153
20172
20181
20192
20204
20217
20223
20234
20251

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 C07D419/04?
CPC C07D419/04 is the Cooperative Patent Classification code for “directly linked by a ring-member-to-ring-member bond.”
How many patents are filed under CPC C07D419/04 (directly linked by a ring-member-to-ring-member bond)?
Our database includes 27 publications tagged with this CPC code.
Is patent activity under CPC C07D419/04 growing?
Publication counts under this code: 4 in 2023 vs 1 in 2025 (latest complete years).