by a heterocyclic ring containing sulfur

by a heterocyclic ring containing 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 codeC08F28/06
Official titleby a heterocyclic ring containing sulfur
Display labelby a heterocyclic ring containing sulfur
Total patents75

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
201611
20177
20187
201912
20208
20215
20222
20237
20241
20252
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 C08F28/06?
CPC C08F28/06 is the Cooperative Patent Classification code for “by a heterocyclic ring containing sulfur.”
How many patents are filed under CPC C08F28/06 (by a heterocyclic ring containing sulfur)?
Our database includes 75 publications tagged with this CPC code.
Is patent activity under CPC C08F28/06 growing?
Publication counts under this code: 1 in 2024 vs 2 in 2025 (latest complete years).