Catalytic recombiner and filter apparatus
US-2019348185-A1 · Nov 14, 2019 · US
Treating gases
Treating gases · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G21F9/02 |
| Official title | Treating gases |
| Display label | Treating gases |
| Total patents | 122 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 17 |
| 2016 | 15 |
| 2017 | 9 |
| 2018 | 8 |
| 2019 | 18 |
| 2020 | 6 |
| 2021 | 6 |
| 2022 | 13 |
| 2023 | 9 |
| 2024 | 10 |
| 2025 | 9 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Combustion controller for combustible gas
US-10468146-B2 · Nov 5, 2019 · US
Venting system for the containment of a nuclear plant and method of operating the venting system
US-10438706-B2 · Oct 8, 2019 · US
Methods of use and manufacture of silver-doped, nano-porous hydroxyapatite
US-2019224642-A1 · Jul 25, 2019 · US
Main stream for reducing release of radioactive material to atmosphere under severe accident
US-2019189299-A1 · Jun 20, 2019 · US
Systems and methods for assaying a radioactive gas, and related scintillation cells
US-10274609-B2 · Apr 30, 2019 · US
Reducing environmental radon
US-2019122778-A1 · Apr 25, 2019 · US
Reducing environmental radon
US-10236089-B1 · Mar 19, 2019 · US
Pressure relief system for the containment of a nuclear power facility, nuclear power facility and method of operating a pressure relief system
US-10236085-B2 · Mar 19, 2019 · US
Treatment method of radioactive iodine-containing fluid
US-2019060864-A1 · Feb 28, 2019 · US
Methyl iodide adsorber, use thereof and method for the adsorption of methyl iodide
US-10207248-B2 · Feb 19, 2019 · US
Ventilation system and associated operating method for use during a serious accident in a nuclear installation
US-10137399-B2 · Nov 27, 2018 · US
Systems and methods for assaying a radioactive gas, and related scintillation cells
US-2018329077-A1 · Nov 15, 2018 · US
Graphene membrane
US-2018311624-A1 · Nov 1, 2018 · US
Porous adsorbent for trapping radioactive iodine gas and method of manufacturing the same
US-2018185813-A1 · Jul 5, 2018 · US
Methods for gas-phase thermochromatographic separations of fission and activation products
US-9951398-B2 · Apr 24, 2018 · US
Containment vent system with passive mode for boiling water reactors (BWRS), and method thereof
US-9922734-B2 · Mar 20, 2018 · US
Porous adsorbent for trapping radioactive iodine gas and method of manufacturing the same
US-9889425-B2 · Feb 13, 2018 · US
Adsorbent and method for producing same
US-2018008954-A1 · Jan 11, 2018 · US
Sodium cesium vapor trap system and method
US-2017337995-A1 · Nov 23, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G21F9/02?
- CPC G21F9/02 is the Cooperative Patent Classification code for “Treating gases.”
- How many patents are filed under CPC G21F9/02 (Treating gases)?
- Our database includes 122 publications tagged with this CPC code.
- Is patent activity under CPC G21F9/02 growing?
- Publication counts under this code: 10 in 2024 vs 9 in 2025 (latest complete years).