Phosphates; Phosphites; Polyphosphates

Phosphates; Phosphites; Polyphosphates · 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 codeC07H11/04
Official titlePhosphates; Phosphites; Polyphosphates
Display labelPhosphates; Phosphites; Polyphosphates
Total patents67

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
20155
20165
20174
20188
201912
20207
20217
20224
20235
20244
20255
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 C07H11/04?
CPC C07H11/04 is the Cooperative Patent Classification code for “Phosphates; Phosphites; Polyphosphates.”
How many patents are filed under CPC C07H11/04 (Phosphates; Phosphites; Polyphosphates)?
Our database includes 67 publications tagged with this CPC code.
Is patent activity under CPC C07H11/04 growing?
Publication counts under this code: 4 in 2024 vs 5 in 2025 (latest complete years).