Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide

Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide · 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 codeC04B2235/3205
Official titleAlkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
Display labelAlkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
Total patents192

Filing trend

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

Filing activity over the last five years is rapidly declining.

Patents filed per year
YearPatents
201517
201610
201719
201813
201928
202022
202132
202215
202314
202410
202511
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 C04B2235/3205?
CPC C04B2235/3205 is the Cooperative Patent Classification code for “Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide.”
How many patents are filed under CPC C04B2235/3205 (Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide)?
Our database includes 192 publications tagged with this CPC code.
Is patent activity under CPC C04B2235/3205 growing?
Publication counts under this code: 10 in 2024 vs 11 in 2025 (latest complete years).