Acrylonitrile series

Acrylonitrile series · Cooperative Patent Classification (CPC)

Textile and paper production, treatment, and products.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeD04H1/43
Official titleAcrylonitrile series
Display labelAcrylonitrile series
Total patents74

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
20152
20164
20178
20186
20194
20206
20217
202212
20238
202413
20254

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 D04H1/43?
CPC D04H1/43 is the Cooperative Patent Classification code for “Acrylonitrile series.”
How many patents are filed under CPC D04H1/43 (Acrylonitrile series)?
Our database includes 74 publications tagged with this CPC code.
Is patent activity under CPC D04H1/43 growing?
Publication counts under this code: 13 in 2024 vs 4 in 2025 (latest complete years).