having expanding chambers for controlling pressure {, i.e. closed systems}

having expanding chambers for controlling pressure {, i.e. closed systems} · Cooperative Patent Classification (CPC)

Separating, mixing, shaping, printing, and transporting materials.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeB60T8/42
Official titlehaving expanding chambers for controlling pressure {, i.e. closed systems}
Display labelhaving expanding chambers for controlling pressure {, i.e. closed systems}
Total patents50

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
20157
20165
20174
20183
20195
20205
20215
20228
20231
20243
20253
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 B60T8/42?
CPC B60T8/42 is the Cooperative Patent Classification code for “having expanding chambers for controlling pressure {, i.e. closed systems}.”
How many patents are filed under CPC B60T8/42 (having expanding chambers for controlling pressure {, i.e. closed systems})?
Our database includes 50 publications tagged with this CPC code.
Is patent activity under CPC B60T8/42 growing?
Publication counts under this code: 3 in 2024 vs 3 in 2025 (latest complete years).