Graphene/porous iron oxide nanorod composite and manufacturing method thereof
US-2017352446-A1 · Dec 7, 2017 · US
Ferric oxide [Fe2O3]
Ferric oxide [Fe2O3] · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C01G49/06 |
| Official title | Ferric oxide [Fe2O3] |
| Display label | Ferric oxide [Fe2O3] |
| Total patents | 352 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 20 |
| 2016 | 28 |
| 2017 | 25 |
| 2018 | 36 |
| 2019 | 44 |
| 2020 | 26 |
| 2021 | 37 |
| 2022 | 39 |
| 2023 | 31 |
| 2024 | 42 |
| 2025 | 21 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for producing hematite for ironmaking
US-9828256-B2 · Nov 28, 2017 · US
Silicon oxide-coated iron oxide composition for coating comprising iron oxide particles coated with silicon oxide
US-2017333300-A1 · Nov 23, 2017 · US
Method for improving quality of titanium-containing feedstock
US-9803261-B2 · Oct 31, 2017 · US
Electromagnetic wave absorber and film forming paste
US-9806427-B2 · Oct 31, 2017 · US
Method for producing hematite for ironmaking
US-9776885-B2 · Oct 3, 2017 · US
Preparation of iron (iii) oxide pigments
US-2017267544-A1 · Sep 21, 2017 · US
Red iron-oxide pigments with improved colour values
US-2017253745-A1 · Sep 7, 2017 · US
Method for producing hematite for ironmaking
US-9752209-B2 · Sep 5, 2017 · US
Nanoparticles and methods of making
US-2017143854-A1 · May 25, 2017 · US
Magnetic iron oxide nanopowder and process for producing the same
US-2017137302-A1 · May 18, 2017 · US
Negative electrode active material for lithium ion secondary battery, negative electrode for lithium ion secondary battery, and lithium ion secondary battery
US-9567238-B2 · Feb 14, 2017 · US
Method for producing hematite for ironmaking
US-2016362304-A1 · Dec 15, 2016 · US
Low-temperature route for precision synthesis of metal oxide nanoparticles
US-9517945-B2 · Dec 13, 2016 · US
Preparation of semiconductor films
US-2016359060-A1 · Dec 8, 2016 · US
Method for improving coercive force of epsilon-type iron oxide, and epsilon-type iron oxide
US-2016343484-A1 · Nov 24, 2016 · US
Process for producing hemataite for ironmaking
US-2016340201-A1 · Nov 24, 2016 · US
Method of manufacturing magnetic particles
US-9487411-B2 · Nov 8, 2016 · US
Method for preparing uniform metal oxide nanoparticles with high reproducibility
US-2016297687-A1 · Oct 13, 2016 · US
Method for producing hematite for ironmaking
US-2016289084-A1 · Oct 6, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01G49/06?
- CPC C01G49/06 is the Cooperative Patent Classification code for “Ferric oxide [Fe2O3].”
- How many patents are filed under CPC C01G49/06 (Ferric oxide [Fe2O3])?
- Our database includes 352 publications tagged with this CPC code.
- Is patent activity under CPC C01G49/06 growing?
- Publication counts under this code: 42 in 2024 vs 21 in 2025 (latest complete years).