Phosphorus-containing compounds {(C08K5/0091 takes precedence)}

Phosphorus-containing compounds {(C08K5/0091 takes precedence)} · 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 codeC08K5/49
Official titlePhosphorus-containing compounds {(C08K5/0091 takes precedence)}
Display labelPhosphorus-containing compounds {(C08K5/0091 takes precedence)}
Total patents543

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
201548
201664
201757
201865
201967
202055
202156
202238
202337
202428
202525
20263

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 C08K5/49?
CPC C08K5/49 is the Cooperative Patent Classification code for “Phosphorus-containing compounds {(C08K5/0091 takes precedence)}.”
How many patents are filed under CPC C08K5/49 (Phosphorus-containing compounds {(C08K5/0091 takes precedence)})?
Our database includes 543 publications tagged with this CPC code.
Is patent activity under CPC C08K5/49 growing?
Publication counts under this code: 28 in 2024 vs 25 in 2025 (latest complete years).