rich in aluminium oxide

rich in aluminium 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 codeC04B35/18
Official titlerich in aluminium oxide
Display labelrich in aluminium oxide
Total patents312

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
201531
201623
201728
201828
201936
202027
202132
202228
202327
202426
202521
20265

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 C04B35/18?
CPC C04B35/18 is the Cooperative Patent Classification code for “rich in aluminium oxide.”
How many patents are filed under CPC C04B35/18 (rich in aluminium oxide)?
Our database includes 312 publications tagged with this CPC code.
Is patent activity under CPC C04B35/18 growing?
Publication counts under this code: 26 in 2024 vs 21 in 2025 (latest complete years).