Germanium oxides, germanates or oxide forming salts thereof, e.g. copper germanate

Germanium oxides, germanates or oxide forming salts thereof, e.g. copper germanate · 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 codeC04B2235/3287
Official titleGermanium oxides, germanates or oxide forming salts thereof, e.g. copper germanate
Display labelGermanium oxides, germanates or oxide forming salts thereof, e.g. copper germanate
Total patents244

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
201523
201615
201719
201820
201922
202020
202131
202220
202329
202423
202519
20263

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 C04B2235/3287?
CPC C04B2235/3287 is the Cooperative Patent Classification code for “Germanium oxides, germanates or oxide forming salts thereof, e.g. copper germanate.”
How many patents are filed under CPC C04B2235/3287 (Germanium oxides, germanates or oxide forming salts thereof, e.g. copper germanate)?
Our database includes 244 publications tagged with this CPC code.
Is patent activity under CPC C04B2235/3287 growing?
Publication counts under this code: 23 in 2024 vs 19 in 2025 (latest complete years).