involving a recycle stream to the feed of the process for making hydrogen or synthesis gas

involving a recycle stream to the feed of the process for making hydrogen or synthesis gas · 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 codeC01B2203/148
Official titleinvolving a recycle stream to the feed of the process for making hydrogen or synthesis gas
Display labelinvolving a recycle stream to the feed of the process for making hydrogen or synthesis gas
Total patents493

Filing trend

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

Filing activity over the last five years is rapidly growing.

Patents filed per year
YearPatents
201539
201675
201745
201839
201926
202025
202126
202242
202348
202462
202558
20268

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 C01B2203/148?
CPC C01B2203/148 is the Cooperative Patent Classification code for “involving a recycle stream to the feed of the process for making hydrogen or synthesis gas.”
How many patents are filed under CPC C01B2203/148 (involving a recycle stream to the feed of the process for making hydrogen or synthesis gas)?
Our database includes 493 publications tagged with this CPC code.
Is patent activity under CPC C01B2203/148 growing?
Publication counts under this code: 62 in 2024 vs 58 in 2025 (latest complete years).