containing nitrogen, oxygen and sulfur

containing nitrogen, oxygen and sulfur · 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 codeC09K15/28
Official titlecontaining nitrogen, oxygen and sulfur
Display labelcontaining nitrogen, oxygen and sulfur
Total patents96

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
201512
201616
201718
20187
201914
20208
20219
20225
20234
20242
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 C09K15/28?
CPC C09K15/28 is the Cooperative Patent Classification code for “containing nitrogen, oxygen and sulfur.”
How many patents are filed under CPC C09K15/28 (containing nitrogen, oxygen and sulfur)?
Our database includes 96 publications tagged with this CPC code.
Is patent activity under CPC C09K15/28 growing?
Publication counts under this code: 4 in 2023 vs 2 in 2024 (latest complete years).