with a rectangular cross-section (ducting arrangements in air-conditioning or ventilation F24F13/02)

with a rectangular cross-section (ducting arrangements in air-conditioning or ventilation F24F13/02) · Cooperative Patent Classification (CPC)

Engines, pumps, lighting, heating, and mechanical systems.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeF16L9/003
Official title{with a rectangular cross-section (ducting arrangements in air-conditioning or ventilation F24F13/02)}
Display labelwith a rectangular cross-section (ducting arrangements in air-conditioning or ventilation F24F13/02)
Total patents33

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
20162
20175
20181
20196
20203
20222
20232
20245
20255
20262

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 F16L9/003?
CPC F16L9/003 is the Cooperative Patent Classification code for “with a rectangular cross-section (ducting arrangements in air-conditioning or ventilation F24F13/02).”
How many patents are filed under CPC F16L9/003 (with a rectangular cross-section (ducting arrangements in air-conditioning or ventilation F24F13/02))?
Our database includes 33 publications tagged with this CPC code.
Is patent activity under CPC F16L9/003 growing?
Publication counts under this code: 5 in 2024 vs 5 in 2025 (latest complete years).