Preparation of oxygen (by liquefying F25J)

Preparation of oxygen (by liquefying F25J) · Cooperative Patent Classification (CPC)

Chemical and metallurgical processes, compounds, and materials.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeC01B13/02
Official titlePreparation of oxygen (by liquefying F25J)
Display labelPreparation of oxygen (by liquefying F25J)
Total patents94

Filing trend

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

Filing activity over the last five years is growing.

Patents filed per year
YearPatents
20159
20168
201710
201814
20195
20206
20215
20228
20235
202415
20257
20262

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 C01B13/02?
CPC C01B13/02 is the Cooperative Patent Classification code for “Preparation of oxygen (by liquefying F25J).”
How many patents are filed under CPC C01B13/02 (Preparation of oxygen (by liquefying F25J))?
Our database includes 94 publications tagged with this CPC code.
Is patent activity under CPC C01B13/02 growing?
Publication counts under this code: 15 in 2024 vs 7 in 2025 (latest complete years).