Esters of phosphoric acids

Esters of phosphoric acids · 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 codeC07F9/09
Official titleEsters of phosphoric acids
Display labelEsters of phosphoric acids
Total patents254

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
201527
201618
201728
201826
201925
202027
202124
202223
202314
202422
202515
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 C07F9/09?
CPC C07F9/09 is the Cooperative Patent Classification code for “Esters of phosphoric acids.”
How many patents are filed under CPC C07F9/09 (Esters of phosphoric acids)?
Our database includes 254 publications tagged with this CPC code.
Is patent activity under CPC C07F9/09 growing?
Publication counts under this code: 22 in 2024 vs 15 in 2025 (latest complete years).