Alkyl ethers

Alkyl ethers · 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 codeC09D101/28
Official titleAlkyl ethers
Display labelAlkyl ethers
Total patents120

Filing trend

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

Filing activity over the last five years is growing.

Patents filed per year
YearPatents
201516
201612
201712
201817
201917
20207
20215
202210
20237
20245
202510
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 C09D101/28?
CPC C09D101/28 is the Cooperative Patent Classification code for “Alkyl ethers.”
How many patents are filed under CPC C09D101/28 (Alkyl ethers)?
Our database includes 120 publications tagged with this CPC code.
Is patent activity under CPC C09D101/28 growing?
Publication counts under this code: 5 in 2024 vs 10 in 2025 (latest complete years).