Magnetodielectric y-phase strontium hexagonal ferrite materials formed by sodium substitution
US-2021366634-A1 · Nov 25, 2021 · US
Other ferrites containing alkaline earth metals or lead
Other ferrites containing alkaline earth metals or lead · 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 | C04B35/2683 |
| Official title | {Other ferrites containing alkaline earth metals or lead} |
| Display label | Other ferrites containing alkaline earth metals or lead |
| Total patents | 97 |
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 | 1 |
| 2016 | 10 |
| 2017 | 2 |
| 2018 | 11 |
| 2019 | 14 |
| 2020 | 14 |
| 2021 | 15 |
| 2022 | 8 |
| 2023 | 15 |
| 2024 | 4 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Increased resonant frequency potassium-doped hexagonal ferrite
US-11164689-B2 · Nov 2, 2021 · US
Three-dimensional (3D) printing
US-11104029-B2 · Aug 31, 2021 · US
Polycrystalline 18h hexaferrite, method of manufacture, and uses thereof
US-2021246046-A1 · Aug 12, 2021 · US
Ferrite sintered magnet and rotary electrical machine comprising the same
US-2021118598-A1 · Apr 22, 2021 · US
Magnetodielectric y-phase strontium hexagonal ferrite materials formed by sodium substitution
US-10984928-B2 · Apr 20, 2021 · US
Piezoelectric composition and piezoelectric device
US-10964878-B2 · Mar 30, 2021 · US
Method for manufacturing briquettes containing a calcium-magnesium compound and an iron-based compound, and briquettes thus obtained
US-10947157-B2 · Mar 16, 2021 · US
Thermally treated briquettes containing a “quick” calcium-magnesium compound and calcium ferrites, and method of manufacture thereof
US-10851017-B2 · Dec 1, 2020 · US
Piezoelectric composition and piezoelectric device
US-10833247-B2 · Nov 10, 2020 · US
Particles of magnetoplumbite-type hexagonal ferrite, method for manufacturing the same, and radio wave absorber
US-2020335247-A1 · Oct 22, 2020 · US
Piezoelectric composition and piezoelectric device
US-10811591-B2 · Oct 20, 2020 · US
Composite hexagonal ferrite materials
US-2020325074-A1 · Oct 15, 2020 · US
Ferrite sintered magnet and rotating electric machine comprising the same
US-2020312493-A1 · Oct 1, 2020 · US
Ferrite sintered magnet and rotary electrical machine comprising the same
US-2020312496-A1 · Oct 1, 2020 · US
Piezoelectric composition and piezoelectric device
US-2020235282-A1 · Jul 23, 2020 · US
Piezoelectric composition and piezoelectric device
US-2020203596-A1 · Jun 25, 2020 · US
Multiferroic materials
US-10689297-B2 · Jun 23, 2020 · US
Composite hexagonal ferrite materials
US-10604450-B2 · Mar 31, 2020 · US
Shaping method and shaping device
US-2020086559-A1 · Mar 19, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C04B35/2683?
- CPC C04B35/2683 is the Cooperative Patent Classification code for “Other ferrites containing alkaline earth metals or lead.”
- How many patents are filed under CPC C04B35/2683 (Other ferrites containing alkaline earth metals or lead)?
- Our database includes 97 publications tagged with this CPC code.
- Is patent activity under CPC C04B35/2683 growing?
- Publication counts under this code: 4 in 2024 vs 3 in 2025 (latest complete years).