Interference pigments
US-2026049218-A1 · Feb 19, 2026 · US
Iron group metal oxides
Iron group metal oxides · 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 | C04B35/62826 |
| Official title | {Iron group metal oxides} |
| Display label | Iron group metal oxides |
| Total patents | 36 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 6 |
| 2017 | 3 |
| 2018 | 5 |
| 2019 | 3 |
| 2020 | 4 |
| 2021 | 4 |
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 2 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Ceramic-reinforced polymer composites with herringbone architecture
US-12269212-B2 · Apr 8, 2025 · US
Grain-boundary and surface-doped rare-earth zirconium-based ceramic material, preparation method therefor, and use thereof
US-2024376011-A1 · Nov 14, 2024 · US
Composite particles and method for producing composite particles
US-2024101829-A1 · Mar 28, 2024 · US
Method for manufacturing an environmental barrier
US-2023250034-A1 · Aug 10, 2023 · US
Magnetic nanocomposite compositions
US-11298430-B2 · Apr 12, 2022 · US
Ceramic-Reinforced Polymer Composites With Herringbone Architecture
US-2021276253-A1 · Sep 9, 2021 · US
Iron oxide powder, composition, ceramics, iron oxide powder precursor, method for producing iron oxide powder precursor, and method for producing iron oxide powder
US-2021269327-A1 · Sep 2, 2021 · US
Magnetizable abrasive particles and abrasive articles including them
US-11072732-B2 · Jul 27, 2021 · US
Piezoelectric composition and piezoelectric device
US-10964878-B2 · Mar 30, 2021 · US
Highly thermally conductive hexagonal boron nitride/alumina composite made from commercial hexagonal boron nitride
US-10876024-B2 · Dec 29, 2020 · US
Piezoelectric composition and piezoelectric device
US-10811591-B2 · Oct 20, 2020 · US
Ferrite powder for bonded magnets, method for producing the same and ferrite bonded magnet
US-10672543-B2 · Jun 2, 2020 · US
Magnetic nanocomposite compositions
US-2020101177-A1 · Apr 2, 2020 · US
Magnetizable abrasive particles and abrasive articles including them
US-2019249053-A1 · Aug 15, 2019 · US
Smart proppant platform technology
US-2019194529-A1 · Jun 27, 2019 · US
Highly Thermally Conductive Hexagonal Boron Nitride/Alumina Composite Made From Commercial Hexagonal Boron Nitride
US-2019177592-A9 · Jun 13, 2019 · US
Conversion of carbonaceous fuels into carbon free energy carriers
US-10081772-B2 · Sep 25, 2018 · US
Piezoelectric composition and piezoelectric device
US-2018261758-A1 · Sep 13, 2018 · US
Piezoelectric composition and piezoelectric device
US-2018261755-A1 · Sep 13, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C04B35/62826?
- CPC C04B35/62826 is the Cooperative Patent Classification code for “Iron group metal oxides.”
- How many patents are filed under CPC C04B35/62826 (Iron group metal oxides)?
- Our database includes 36 publications tagged with this CPC code.
- Is patent activity under CPC C04B35/62826 growing?
- Publication counts under this code: 2 in 2024 vs 1 in 2025 (latest complete years).