Glass fibres

Glass fibres · 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 codeD04H1/4218
Official titleGlass fibres
Display labelGlass fibres
Total patents541

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
201533
201638
201732
201848
201955
202050
202148
202249
202357
202464
202550
202617

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 D04H1/4218?
CPC D04H1/4218 is the Cooperative Patent Classification code for “Glass fibres.”
How many patents are filed under CPC D04H1/4218 (Glass fibres)?
Our database includes 541 publications tagged with this CPC code.
Is patent activity under CPC D04H1/4218 growing?
Publication counts under this code: 64 in 2024 vs 50 in 2025 (latest complete years).