including solvent extraction as the refining step in the absence of hydrogen

including solvent extraction as the refining step in the absence of hydrogen · 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 codeC10G67/04
Official titleincluding solvent extraction as the refining step in the absence of hydrogen
Display labelincluding solvent extraction as the refining step in the absence of hydrogen
Total patents163

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
201521
201618
201717
201817
201911
202017
202115
20224
202315
202414
202510
20264

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 C10G67/04?
CPC C10G67/04 is the Cooperative Patent Classification code for “including solvent extraction as the refining step in the absence of hydrogen.”
How many patents are filed under CPC C10G67/04 (including solvent extraction as the refining step in the absence of hydrogen)?
Our database includes 163 publications tagged with this CPC code.
Is patent activity under CPC C10G67/04 growing?
Publication counts under this code: 14 in 2024 vs 10 in 2025 (latest complete years).