What is CPC F27B3/045?

CPC F27B3/045 is the Cooperative Patent Classification code for “Multiple chambers, e.g. one of which is used for charging.”

How many patents are filed under CPC F27B3/045 (Multiple chambers, e.g. one of which is used for charging)?

Our database includes 55 publications tagged with this CPC code.

Publication counts under this code: 8 in 2024 vs 4 in 2025 (latest complete years).

Multiple chambers, e.g. one of which is used for charging · 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	F27B3/045
Official title	{Multiple chambers, e.g. one of which is used for charging}
Display label	Multiple chambers, e.g. one of which is used for charging
Total patents	55

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

Filing activity over the last five years is growing.

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 F27B3/045?: CPC F27B3/045 is the Cooperative Patent Classification code for “Multiple chambers, e.g. one of which is used for charging.”
How many patents are filed under CPC F27B3/045 (Multiple chambers, e.g. one of which is used for charging)?: Our database includes 55 publications tagged with this CPC code.
Is patent activity under CPC F27B3/045 growing?: Publication counts under this code: 8 in 2024 vs 4 in 2025 (latest complete years).