by reaction with compounds containing nitrogen, e.g. by nitration

by reaction with compounds containing nitrogen, e.g. by nitration · 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 codeC09D123/36
Official titleby reaction with compounds containing nitrogen, e.g. by nitration
Display labelby reaction with compounds containing nitrogen, e.g. by nitration
Total patents31

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
20155
20162
20175
20184
20195
20204
20212
20221
20241
20251
20261

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 C09D123/36?
CPC C09D123/36 is the Cooperative Patent Classification code for “by reaction with compounds containing nitrogen, e.g. by nitration.”
How many patents are filed under CPC C09D123/36 (by reaction with compounds containing nitrogen, e.g. by nitration)?
Our database includes 31 publications tagged with this CPC code.
Is patent activity under CPC C09D123/36 growing?
Publication counts under this code: 1 in 2024 vs 1 in 2025 (latest complete years).