One oxygen atom and one sulfur atom

One oxygen atom and one sulfur atom · 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 codeC07D239/56
Official titleOne oxygen atom and one sulfur atom
Display labelOne oxygen atom and one sulfur atom
Total patents99

Filing trend

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

Filing activity over the last five years is declining.

Patents filed per year
YearPatents
201512
201612
201710
201811
20198
202013
20216
20225
20237
20249
20254
20262

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 C07D239/56?
CPC C07D239/56 is the Cooperative Patent Classification code for “One oxygen atom and one sulfur atom.”
How many patents are filed under CPC C07D239/56 (One oxygen atom and one sulfur atom)?
Our database includes 99 publications tagged with this CPC code.
Is patent activity under CPC C07D239/56 growing?
Publication counts under this code: 9 in 2024 vs 4 in 2025 (latest complete years).