Control rod damping system
US-2021398695-A1 · Dec 23, 2021 · US
Means for effecting very rapid reduction of the reactivity factor under fault conditions, e.g. reactor fuse; {Control elements having arrangements activated in an emergency}(control elements per se G21C7/00)
Means for effecting very rapid reduction of the reactivity factor under fault conditions, e.g. reactor fuse; {Control elements having arrangements activated in an emergency}(control elements per se G21C7/00) · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G21C9/02 |
| Official title | Means for effecting very rapid reduction of the reactivity factor under fault conditions, e.g. reactor fuse; {Control elements having arrangements activated in an emergency}(control elements per se G21C7/00) |
| Display label | Means for effecting very rapid reduction of the reactivity factor under fault conditions, e.g. reactor fuse; {Control elements having arrangements activated in an emergency}(control elements per se G21C7/00) |
| Total patents | 110 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 5 |
| 2017 | 5 |
| 2018 | 15 |
| 2019 | 7 |
| 2020 | 19 |
| 2021 | 12 |
| 2022 | 19 |
| 2023 | 6 |
| 2024 | 11 |
| 2025 | 6 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Passive electrical component for safety system shutdown using Gauss' law of magnetism
US-11170906-B2 · Nov 9, 2021 · US
Control rod drive mechanism and reactor control system
US-11164682-B1 · Nov 2, 2021 · US
Nuclear reactor protection systems and methods
US-2021287813-A1 · Sep 16, 2021 · US
Nuclear reactor protection systems and methods
US-11069450-B2 · Jul 20, 2021 · US
Reactor shutdown system
US-2021183530-A1 · Jun 17, 2021 · US
Movable standby hydraulic control unit that is usable during a control rod drive system inspection to temporarily replace any one of several hydraulic control units
US-10957458-B2 · Mar 23, 2021 · US
Baffle structure for channel
US-10943704-B2 · Mar 9, 2021 · US
Stationary isolated rod couplings for use in a nuclear reactor control rod drive
US-10872702-B2 · Dec 22, 2020 · US
Moveable isolated rod couplings for use in a nuclear reactor control rod drive
US-10872703-B2 · Dec 22, 2020 · US
Rotational apparatus usable with control drum apparatus in nuclear environment
US-2020395134-A1 · Dec 17, 2020 · US
Magnetically-actuated isolated rod couplings for use in a nuclear reactor control rod drive
US-2020388407-A1 · Dec 10, 2020 · US
Control rod drive mechanism (CRDM) with remote disconnect mechanism
US-10847272-B2 · Nov 24, 2020 · US
Subcritical reactivity monitor utilizing prompt self-powered incore detectors
US-2020365285-A1 · Nov 19, 2020 · US
Control rod drive mechanism with separate latch and drive coils
US-2020357530-A1 · Nov 12, 2020 · US
Rotational apparatus usable with control drum apparatus in nuclear environment
US-10790066-B2 · Sep 29, 2020 · US
Magnetically-actuated isolated rod couplings for use in a nuclear reactor control rod drive
US-10770189-B2 · Sep 8, 2020 · US
Passive electrical component for safety system shutdown using Faraday's law
US-10755825-B2 · Aug 25, 2020 · US
Surrogate materials for emergency response training and methods of formation and dispersal
US-2020203032-A1 · Jun 25, 2020 · US
Passive electrical component for safety system shutdown using gauss' law of magnetism
US-2020135354-A1 · Apr 30, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G21C9/02?
- CPC G21C9/02 is the Cooperative Patent Classification code for “Means for effecting very rapid reduction of the reactivity factor under fault conditions, e.g. reactor fuse; {Control elements having arrangements activated in an emergency}(control elements per se G21C7/00).”
- How many patents are filed under CPC G21C9/02 (Means for effecting very rapid reduction of the reactivity factor under fault conditions, e.g. reactor fuse; {Control elements having arrangements activated in an emergency}(control elements per se G21C7/00))?
- Our database includes 110 publications tagged with this CPC code.
- Is patent activity under CPC G21C9/02 growing?
- Publication counts under this code: 11 in 2024 vs 6 in 2025 (latest complete years).