Ferrite particles, carrier for electrophotographic developer, electrophotographic developer, and ferrite particle production method
US-2024254004-A1 · Aug 1, 2024 · US
Chemistry & Metallurgy
Chemistry & Metallurgy · 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 | C01G49/0072 |
| Official title | — |
| Display label | Chemistry & Metallurgy (mapped technology topic) |
| Total patents | 177 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 12 |
| 2016 | 15 |
| 2017 | 16 |
| 2018 | 14 |
| 2019 | 24 |
| 2020 | 15 |
| 2021 | 15 |
| 2022 | 16 |
| 2023 | 21 |
| 2024 | 10 |
| 2025 | 17 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Ferrite particles provided with outer shell structure for catalyst supporting medium
US-10258970-B2 · Apr 16, 2019 · US
Ferrite sintered magnet
US-10249417-B2 · Apr 2, 2019 · US
Magnetic powder, manufacturing method of magnetic powder, and magnetic recording medium
US-2018358045-A1 · Dec 13, 2018 · US
Engineered nanoparticles for aqueous applications
US-2018280923-A1 · Oct 4, 2018 · US
Cathode active material, secondary battery comprising the same, and method of manufacturing the positive active material
US-2018205077-A1 · Jul 19, 2018 · US
Method of magnetite and ferrite nanoparticle synthesis
US-10011498-B2 · Jul 3, 2018 · US
Spherical ferrite powder, resin compound including spherical ferrite powder, and molded product made of resin compound
US-2018179082-A1 · Jun 28, 2018 · US
Method for generating oxygen from compositions comprising ionic liquids
US-2018141812-A1 · May 24, 2018 · US
Cathode active material, secondary battery comprising the same, and method of manufacturing the positive active material
US-9960419-B2 · May 1, 2018 · US
Carrier core material and electrophotographic development carrier using same and electrophotographic developer
US-2018107129-A1 · Apr 19, 2018 · US
Ferrite magnetic substance and method of manufacturing the same
US-2018096761-A1 · Apr 5, 2018 · US
Kit for wastewater treatment, and manufacturing method for and use of photocatalyst
US-9902631-B2 · Feb 27, 2018 · US
Magnetic material and production method therefor
US-2018033531-A1 · Feb 1, 2018 · US
Ferrite particles having outer shell structure used for filtering medium
US-2018008921-A1 · Jan 11, 2018 · US
Ferrite particles provided with outer shell structure for catalyst supporting medium
US-2018008966-A1 · Jan 11, 2018 · US
Ferrite particle having outer shell structure
US-2018011414-A1 · Jan 11, 2018 · US
Magnetic filler
US-2017369672-A1 · Dec 28, 2017 · US
Oxygen storage capacity of non-copper spinel oxide materials for twc applications
US-2017326533-A1 · Nov 16, 2017 · US
Spherical ferrite particles in nano-size and method of manufacturing same
US-2017301443-A1 · Oct 19, 2017 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01G49/0072?
- CPC C01G49/0072 is the Cooperative Patent Classification code for “Chemistry & Metallurgy.”
- How many patents are filed under CPC C01G49/0072 (Chemistry & Metallurgy)?
- Our database includes 177 publications tagged with this CPC code.
- Is patent activity under CPC C01G49/0072 growing?
- Publication counts under this code: 10 in 2024 vs 17 in 2025 (latest complete years).