for elevated railways with rigid rails (B61C13/08 takes precedence)

for elevated railways with rigid rails (B61C13/08 takes precedence) · Cooperative Patent Classification (CPC)

Separating, mixing, shaping, printing, and transporting materials.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeB61C13/04
Official titlefor elevated railways with rigid rails (B61C13/08 takes precedence)
Display labelfor elevated railways with rigid rails (B61C13/08 takes precedence)
Total patents26

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
20152
20172
20181
20194
20202
20213
20222
20234
20241
20254
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 B61C13/04?
CPC B61C13/04 is the Cooperative Patent Classification code for “for elevated railways with rigid rails (B61C13/08 takes precedence).”
How many patents are filed under CPC B61C13/04 (for elevated railways with rigid rails (B61C13/08 takes precedence))?
Our database includes 26 publications tagged with this CPC code.
Is patent activity under CPC B61C13/04 growing?
Publication counts under this code: 1 in 2024 vs 4 in 2025 (latest complete years).