Dielectric and functional element
US-2026058068-A1 · Feb 26, 2026 · US
Compounds of hafnium
Compounds of hafnium · 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 | C01G27/00 |
| Official title | Compounds of hafnium |
| Display label | Compounds of hafnium |
| Total patents | 35 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 2 |
| 2017 | 5 |
| 2018 | 1 |
| 2019 | 2 |
| 2020 | 1 |
| 2021 | 3 |
| 2022 | 4 |
| 2023 | 3 |
| 2024 | 5 |
| 2025 | 3 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Reducing agent and method for producing gas
US-12434226-B2 · Oct 7, 2025 · US
Method for producing ferroelectric film, ferroelectric film, and usage thereof
US-12359300-B2 · Jul 15, 2025 · US
Neutron absorber and neutron absorption control rod for nuclear reactor
US-2025201430-A1 · Jun 19, 2025 · US
Scintillator and radiation detector
US-12044812-B2 · Jul 23, 2024 · US
Solid electrolyte, preparation method thereof, metal air battery including the same, and electrochemical device including the same
US-11955597-B2 · Apr 9, 2024 · US
Scintillator and radiation detector
US-11939504-B2 · Mar 26, 2024 · US
Ion conductor, and positive electrode, solid electrolyte, and lithium battery each including the ion conductor, and method of preparing the ion conductor
US-11901544-B2 · Feb 13, 2024 · US
Scintillator and Radiation Detector
US-2024019592-A1 · Jan 18, 2024 · US
Ion conductor, and positive electrode, solid electrolyte, and lithium battery each including the ion conductor, and method of preparing the ion conductor
US-11843107-B2 · Dec 12, 2023 · US
Reducing agent and method for producing gas
US-2023330635-A1 · Oct 19, 2023 · US
Ion conductor, and positive electrode, solid electrolyte, and lithium battery each including the ion conductor, and method of preparing the ion conductor
US-2023142448-A1 · May 11, 2023 · US
Scintillator and Radiation Detector
US-2022326400-A1 · Oct 13, 2022 · US
Method for producing ferroelectric film, ferroelectric film, and usage thereof
US-2022178012-A1 · Jun 9, 2022 · US
High breakdown strength ferroelectric SrHfO3 materials
US-11335845-B2 · May 17, 2022 · US
Oxide superconducting wire and method of manufacturing the same
US-11267722-B2 · Mar 8, 2022 · US
Oxide superconducting wire and method of manufacturing the same
US-2021323834-A1 · Oct 21, 2021 · US
Solid electrolyte, preparation method thereof, metal air battery including the same, and electrochemical device including the same
US-2021167419-A1 · Jun 3, 2021 · US
Ion conductor, and positive electrode, solid electrolyte, and lithium battery each including the ion conductor, and method of preparing the ion conductor
US-2021167356-A1 · Jun 3, 2021 · US
Solid state lithium-ion conductor
US-10770751-B2 · Sep 8, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01G27/00?
- CPC C01G27/00 is the Cooperative Patent Classification code for “Compounds of hafnium.”
- How many patents are filed under CPC C01G27/00 (Compounds of hafnium)?
- Our database includes 35 publications tagged with this CPC code.
- Is patent activity under CPC C01G27/00 growing?
- Publication counts under this code: 5 in 2024 vs 3 in 2025 (latest complete years).