Preparation from hydrogen and oxygen

Preparation from hydrogen and oxygen · 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 codeC01B15/029
Official titlePreparation from hydrogen and oxygen
Display labelPreparation from hydrogen and oxygen
Total patents38

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
20154
20163
20177
20187
20196
20201
20213
20222
20231
20241
20252
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 C01B15/029?
CPC C01B15/029 is the Cooperative Patent Classification code for “Preparation from hydrogen and oxygen.”
How many patents are filed under CPC C01B15/029 (Preparation from hydrogen and oxygen)?
Our database includes 38 publications tagged with this CPC code.
Is patent activity under CPC C01B15/029 growing?
Publication counts under this code: 1 in 2024 vs 2 in 2025 (latest complete years).