Ferrite particles, carrier for electrophotographic developer, electrophotographic developer, and ferrite particle production method
US-2024254004-A1 · Aug 1, 2024 · US
Compounds containing iron, with or without oxygen or hydrogen, and containing two or more other elements
Compounds containing iron, with or without oxygen or hydrogen, and containing two or more other elements · 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 | C01G49/009 |
| Official title | {Compounds containing iron, with or without oxygen or hydrogen, and containing two or more other elements} |
| Display label | Compounds containing iron, with or without oxygen or hydrogen, and containing two or more other elements |
| Total patents | 323 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 33 |
| 2016 | 35 |
| 2017 | 27 |
| 2018 | 23 |
| 2019 | 29 |
| 2020 | 26 |
| 2021 | 26 |
| 2022 | 34 |
| 2023 | 25 |
| 2024 | 32 |
| 2025 | 27 |
| 2026 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for preparing polyanion type sodium battery positive electrode material on the basis of organic acid dissolution method
US-2024228319-A1 · Jul 11, 2024 · US
Cathode active material
US-9466835-B2 · Oct 11, 2016 · US
Lithium sulfide-iron-carbon complex
US-2016268606-A1 · Sep 15, 2016 · US
Fluoro material which may be used as an electrode active material
US-9444102-B2 · Sep 13, 2016 · US
Electrode materials for lithium ion batteries
US-2016233488-A1 · Aug 11, 2016 · US
Calibration and optimization of ESA in aircraft radomes
US-9409151-B1 · Aug 9, 2016 · US
Positive electrode material for sodium ion secondary batteries
US-2016226069-A1 · Aug 4, 2016 · US
Anode active material and metal ion battery prepared therewith
US-9406935-B2 · Aug 2, 2016 · US
Ferrite particles for bonded magnets, resin composition for bonded magnets, and molded product using the same
US-2016217892-A1 · Jul 28, 2016 · US
Lepidocrocite-type titanate, method for producing same, and resin composition containing same
US-2016214870-A1 · Jul 28, 2016 · US
Adsorbent material, process for its preparation and use thereof
US-9393547-B2 · Jul 19, 2016 · US
Active material, nonaqueous electrolyte battery, and battery pack
US-9391324-B2 · Jul 12, 2016 · US
Positive electrode active material, production method thereof and non-aqueous electrolyte secondary battery
US-9391325-B2 · Jul 12, 2016 · US
Nonaqueous electrolyte battery and battery pack
US-2016190581-A1 · Jun 30, 2016 · US
Magnetic resonance imaging contrast agents comprising zinc-containing magnetic metal oxide nanoparticles
US-9375495-B2 · Jun 28, 2016 · US
Mesoporous cellular foam impregnated with iron-substituted heteropolyacid, preparation method therefor, and carbon dioxide separation method using same
US-2016158727-A1 · Jun 9, 2016 · US
Use of novel compounds as negative electrode active material in a sodium-ion battery
US-2016141611-A1 · May 19, 2016 · US
Pyroelectric body, pyroelectric element, production method for pyroelectric element, thermoelectric conversion element, production method for thermoelectric conversion element, thermal photodetector, production method for thermal photodetector, and electronic apparatus
US-2016131530-A1 · May 12, 2016 · US
TUNE THE OXYGEN STORAGE PROPERTIES OF Ca2MnAlO5+delta THROUGH CHEMICAL DOPING
US-2016107139-A1 · Apr 21, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01G49/009?
- CPC C01G49/009 is the Cooperative Patent Classification code for “Compounds containing iron, with or without oxygen or hydrogen, and containing two or more other elements.”
- How many patents are filed under CPC C01G49/009 (Compounds containing iron, with or without oxygen or hydrogen, and containing two or more other elements)?
- Our database includes 323 publications tagged with this CPC code.
- Is patent activity under CPC C01G49/009 growing?
- Publication counts under this code: 32 in 2024 vs 27 in 2025 (latest complete years).