for homogeneous viscous liquids

for homogeneous viscous liquids · 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 codeF04C13/002
Official title{for homogeneous viscous liquids}
Display labelfor homogeneous viscous liquids
Total patents59

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
201510
20167
20172
20184
20195
20204
20216
20226
20234
20247
20254

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 F04C13/002?
CPC F04C13/002 is the Cooperative Patent Classification code for “for homogeneous viscous liquids.”
How many patents are filed under CPC F04C13/002 (for homogeneous viscous liquids)?
Our database includes 59 publications tagged with this CPC code.
Is patent activity under CPC F04C13/002 growing?
Publication counts under this code: 7 in 2024 vs 4 in 2025 (latest complete years).