using washing fluids {(scrubbers for removing solids only F23J15/022)}

using washing fluids {(scrubbers for removing solids only F23J15/022)} · 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 codeF23J15/04
Official titleusing washing fluids {(scrubbers for removing solids only F23J15/022)}
Display labelusing washing fluids {(scrubbers for removing solids only F23J15/022)}
Total patents204

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
201532
201628
201732
201825
201920
202019
202113
202210
20237
20248
20259
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 F23J15/04?
CPC F23J15/04 is the Cooperative Patent Classification code for “using washing fluids {(scrubbers for removing solids only F23J15/022)}.”
How many patents are filed under CPC F23J15/04 (using washing fluids {(scrubbers for removing solids only F23J15/022)})?
Our database includes 204 publications tagged with this CPC code.
Is patent activity under CPC F23J15/04 growing?
Publication counts under this code: 8 in 2024 vs 9 in 2025 (latest complete years).