Pressure vessels, or vacuum vessels, having closure members or seals specially adapted therefor

Pressure vessels, or vacuum vessels, having closure members or seals specially adapted therefor · 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 codeB01J3/03
Official titlePressure vessels, or vacuum vessels, having closure members or seals specially adapted therefor
Display labelPressure vessels, or vacuum vessels, having closure members or seals specially adapted therefor
Total patents105

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
20156
20166
20175
20189
201912
202012
202116
202212
202310
20248
20258
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 B01J3/03?
CPC B01J3/03 is the Cooperative Patent Classification code for “Pressure vessels, or vacuum vessels, having closure members or seals specially adapted therefor.”
How many patents are filed under CPC B01J3/03 (Pressure vessels, or vacuum vessels, having closure members or seals specially adapted therefor)?
Our database includes 105 publications tagged with this CPC code.
Is patent activity under CPC B01J3/03 growing?
Publication counts under this code: 8 in 2024 vs 8 in 2025 (latest complete years).