PatentsDB

Phosphonic acid, e.g. H2P(O)(OH)2

Phosphonic acid, e.g. H2P(O)(OH)2 · 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 codeC22B3/3844
Official title{Phosphonic acid, e.g. H2P(O)(OH)2}
Display labelPhosphonic acid, e.g. H2P(O)(OH)2
Total patents71

Filing trend

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

Filing activity over the last five years is growing.

Patents filed per year
YearPatents
20151
20171
20194
20203
20215
20227
202318
202418
202510
20264

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 C22B3/3844?
CPC C22B3/3844 is the Cooperative Patent Classification code for “Phosphonic acid, e.g. H2P(O)(OH)2.”
How many patents are filed under CPC C22B3/3844 (Phosphonic acid, e.g. H2P(O)(OH)2)?
Our database includes 71 publications tagged with this CPC code.
Is patent activity under CPC C22B3/3844 growing?
Publication counts under this code: 18 in 2024 vs 10 in 2025 (latest complete years).