using gas

using 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 codeC03B27/04
Official titleusing gas
Display labelusing gas
Total patents66

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
20153
201611
20177
20186
20198
20204
20217
20226
20234
20245
20254
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 C03B27/04?
CPC C03B27/04 is the Cooperative Patent Classification code for “using gas.”
How many patents are filed under CPC C03B27/04 (using gas)?
Our database includes 66 publications tagged with this CPC code.
Is patent activity under CPC C03B27/04 growing?
Publication counts under this code: 5 in 2024 vs 4 in 2025 (latest complete years).