Metal complexes comprising an iron-series metal, e.g. Fe, Co, Ni

Metal complexes comprising an iron-series metal, e.g. Fe, Co, Ni · Cooperative Patent Classification (CPC)

Electric circuits, power, telecommunications, and semiconductors.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeH10K85/331
Official title{Metal complexes comprising an iron-series metal, e.g. Fe, Co, Ni}
Display labelMetal complexes comprising an iron-series metal, e.g. Fe, Co, Ni
Total patents229

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
201518
201620
201715
201815
201918
202023
202123
202221
202319
202432
202518
20267

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 H10K85/331?
CPC H10K85/331 is the Cooperative Patent Classification code for “Metal complexes comprising an iron-series metal, e.g. Fe, Co, Ni.”
How many patents are filed under CPC H10K85/331 (Metal complexes comprising an iron-series metal, e.g. Fe, Co, Ni)?
Our database includes 229 publications tagged with this CPC code.
Is patent activity under CPC H10K85/331 growing?
Publication counts under this code: 32 in 2024 vs 18 in 2025 (latest complete years).