What is CPC F04B23/028?

CPC F04B23/028 is the Cooperative Patent Classification code for “the pump being mounted on top of the reservoir.”

How many patents are filed under CPC F04B23/028 (the pump being mounted on top of the reservoir)?

Our database includes 77 publications tagged with this CPC code.

Publication counts under this code: 6 in 2023 vs 4 in 2025 (latest complete years).

the pump being mounted on top of the reservoir · 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	F04B23/028
Official title	{the pump being mounted on top of the reservoir}
Display label	the pump being mounted on top of the reservoir
Total patents	77

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

Filing activity over the last five years is rapidly declining.

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 F04B23/028?: CPC F04B23/028 is the Cooperative Patent Classification code for “the pump being mounted on top of the reservoir.”
How many patents are filed under CPC F04B23/028 (the pump being mounted on top of the reservoir)?: Our database includes 77 publications tagged with this CPC code.
Is patent activity under CPC F04B23/028 growing?: Publication counts under this code: 6 in 2023 vs 4 in 2025 (latest complete years).