Lignin

Lignin · 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 codeC09D197/005
Official title{Lignin}
Display labelLignin
Total patents97

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
201512
20163
20177
201812
201910
202010
20218
20226
202310
20246
202512
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 C09D197/005?
CPC C09D197/005 is the Cooperative Patent Classification code for “Lignin.”
How many patents are filed under CPC C09D197/005 (Lignin)?
Our database includes 97 publications tagged with this CPC code.
Is patent activity under CPC C09D197/005 growing?
Publication counts under this code: 6 in 2024 vs 12 in 2025 (latest complete years).