Cellulose ethers

Cellulose 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 codeC09D101/26
Official titleCellulose ethers
Display labelCellulose ethers
Total patents34

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
20154
20167
20173
20186
20192
20203
20211
20232
20244
20252

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 C09D101/26?
CPC C09D101/26 is the Cooperative Patent Classification code for “Cellulose ethers.”
How many patents are filed under CPC C09D101/26 (Cellulose ethers)?
Our database includes 34 publications tagged with this CPC code.
Is patent activity under CPC C09D101/26 growing?
Publication counts under this code: 4 in 2024 vs 2 in 2025 (latest complete years).