What is CPC F04B39/0253?

CPC F04B39/0253 is the Cooperative Patent Classification code for “using centrifugal force for transporting the oil.”

How many patents are filed under CPC F04B39/0253 (using centrifugal force for transporting the oil)?

Our database includes 30 publications tagged with this CPC code.

Publication counts under this code: 3 in 2024 vs 2 in 2025 (latest complete years).

using centrifugal force for transporting the oil · Cooperative Patent Classification (CPC)

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

Mapped technology topics for this CPC code.

CPC classification statistics
Metric	Value
CPC code	F04B39/0253
Official title	{using centrifugal force for transporting the oil}
Display label	using centrifugal force for transporting the oil
Total patents	30

Year-over-year patent counts classified under this CPC code.

Filing activity over the last five years is stable.

Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.

Answers are generated from the same data shown on this page.

What is CPC F04B39/0253?: CPC F04B39/0253 is the Cooperative Patent Classification code for “using centrifugal force for transporting the oil.”
How many patents are filed under CPC F04B39/0253 (using centrifugal force for transporting the oil)?: Our database includes 30 publications tagged with this CPC code.
Is patent activity under CPC F04B39/0253 growing?: Publication counts under this code: 3 in 2024 vs 2 in 2025 (latest complete years).