Boron oxide, borates, boric acids, or oxide forming salts thereof, e.g. borax

Boron oxide, borates, boric acids, or oxide forming salts thereof, e.g. borax · 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 codeC04B2235/3409
Official titleBoron oxide, borates, boric acids, or oxide forming salts thereof, e.g. borax
Display labelBoron oxide, borates, boric acids, or oxide forming salts thereof, e.g. borax
Total patents584

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
201562
201660
201753
201837
201968
202051
202145
202268
202359
202438
202535
20268

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 C04B2235/3409?
CPC C04B2235/3409 is the Cooperative Patent Classification code for “Boron oxide, borates, boric acids, or oxide forming salts thereof, e.g. borax.”
How many patents are filed under CPC C04B2235/3409 (Boron oxide, borates, boric acids, or oxide forming salts thereof, e.g. borax)?
Our database includes 584 publications tagged with this CPC code.
Is patent activity under CPC C04B2235/3409 growing?
Publication counts under this code: 38 in 2024 vs 35 in 2025 (latest complete years).