Spool carriers

Spool carriers · 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 codeD04C3/14
Official titleSpool carriers
Display labelSpool carriers
Total patents25

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
20162
20172
20193
20203
20213
20221
20236
20242
20252
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 D04C3/14?
CPC D04C3/14 is the Cooperative Patent Classification code for “Spool carriers.”
How many patents are filed under CPC D04C3/14 (Spool carriers)?
Our database includes 25 publications tagged with this CPC code.
Is patent activity under CPC D04C3/14 growing?
Publication counts under this code: 2 in 2024 vs 2 in 2025 (latest complete years).