Cyclic ethers having at least one atom other than carbon and hydrogen outside the ring

Cyclic ethers having at least one atom other than carbon and hydrogen outside the ring · 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 codeC08G65/22
Official titleCyclic ethers having at least one atom other than carbon and hydrogen outside the ring
Display labelCyclic ethers having at least one atom other than carbon and hydrogen outside the ring
Total patents234

Filing trend

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

Filing activity over the last five years is stable.

Patents filed per year
YearPatents
201529
201619
201728
201829
201928
202025
202114
202218
202315
202413
202512
20264

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 C08G65/22?
CPC C08G65/22 is the Cooperative Patent Classification code for “Cyclic ethers having at least one atom other than carbon and hydrogen outside the ring.”
How many patents are filed under CPC C08G65/22 (Cyclic ethers having at least one atom other than carbon and hydrogen outside the ring)?
Our database includes 234 publications tagged with this CPC code.
Is patent activity under CPC C08G65/22 growing?
Publication counts under this code: 13 in 2024 vs 12 in 2025 (latest complete years).