Alkaline earth metal oxides

Alkaline earth metal oxides · 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 codeC04B35/6281
Official title{Alkaline earth metal oxides}
Display labelAlkaline earth metal oxides
Total patents70

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
20157
20165
20171
20184
20198
20209
20218
20226
20237
20249
20256

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 C04B35/6281?
CPC C04B35/6281 is the Cooperative Patent Classification code for “Alkaline earth metal oxides.”
How many patents are filed under CPC C04B35/6281 (Alkaline earth metal oxides)?
Our database includes 70 publications tagged with this CPC code.
Is patent activity under CPC C04B35/6281 growing?
Publication counts under this code: 9 in 2024 vs 6 in 2025 (latest complete years).