Chemical decontamination method and chemical decontamination apparatus
US-12283386-B2 · Apr 22, 2025 · US
of metallic surfaces
of metallic surfaces · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G21F9/004 |
| Official title | {of metallic surfaces} |
| Display label | of metallic surfaces |
| Total patents | 44 |
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 | 5 |
| 2017 | 2 |
| 2018 | 6 |
| 2019 | 5 |
| 2020 | 3 |
| 2021 | 5 |
| 2022 | 6 |
| 2023 | 2 |
| 2024 | 4 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for treating surfaces or gaseous media using a ferromagnetic gel
US-2024307844-A1 · Sep 19, 2024 · US
Integrated electrochemical nuclear decontamination system
US-11996593-B1 · May 28, 2024 · US
Chemical Decontamination Method and Chemical Decontamination Apparatus
US-2024071640-A1 · Feb 29, 2024 · US
Waste liquid treatment facility
US-2024055147-A1 · Feb 15, 2024 · US
Ambient temperature decontamination of nuclear power plant component surfaces containing radionuclides in a metal oxide
US-11728054-B2 · Aug 15, 2023 · US
Method for reducing radiologically-contaminated waste
US-11651867-B2 · May 16, 2023 · US
Method for recovering uranium from components contaminated with uranium oxide
US-11486023-B2 · Nov 1, 2022 · US
Method for decontaminating metal surfaces of a nuclear facility
US-11443863-B2 · Sep 13, 2022 · US
Recontamination mitigation method by carbon steel passivation of nuclear systems and components
US-11286569-B2 · Mar 29, 2022 · US
Chemical decontamination method using chelate free chemical decontamination reagent for removal of the dense radioactive oxide layer on the metal surface
US-11289232-B2 · Mar 29, 2022 · US
Method of decontaminating a metal surface in a nuclear power plant
US-11244770-B2 · Feb 8, 2022 · US
Chemical decontamination method
US-11232878-B2 · Jan 25, 2022 · US
Method for reducing radiologically-contaminated waste
US-2021350945-A1 · Nov 11, 2021 · US
Chemical Decontamination Method and Chemical Decontamination Apparatus
US-2021296019-A1 · Sep 23, 2021 · US
Method of decontaminating a metal surface in a nuclear power plant
US-2021225544-A1 · Jul 22, 2021 · US
Method for decontaminating metal surfaces of a nuclear facility
US-2021225543-A1 · Jul 22, 2021 · US
Method for treating waste water from the decontamination of a metal surface, waste-water treatment device and use of the waste-water treatment device
US-10950360-B2 · Mar 16, 2021 · US
Decontamination method reducing radioactive waste
US-10762997-B2 · Sep 1, 2020 · US
Method for recovering uranium from components contaminated with uranium oxide
US-2020024688-A1 · Jan 23, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G21F9/004?
- CPC G21F9/004 is the Cooperative Patent Classification code for “of metallic surfaces.”
- How many patents are filed under CPC G21F9/004 (of metallic surfaces)?
- Our database includes 44 publications tagged with this CPC code.
- Is patent activity under CPC G21F9/004 growing?
- Publication counts under this code: 4 in 2024 vs 1 in 2025 (latest complete years).