Assembly for preventing a backflow
US-12595857-B2 · Apr 7, 2026 · US
with a plurality of balls
with a plurality of balls · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F16K15/042 |
| Official title | {with a plurality of balls} |
| Display label | with a plurality of balls |
| Total patents | 45 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 1 |
| 2017 | 4 |
| 2018 | 3 |
| 2019 | 1 |
| 2020 | 6 |
| 2021 | 1 |
| 2022 | 7 |
| 2023 | 6 |
| 2024 | 5 |
| 2025 | 6 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Vacuum pump
US-12546300-B2 · Feb 10, 2026 · US
Check valve for RAT re-stow pump
US-12516665-B2 · Jan 6, 2026 · US
Variable flow check valve device, suspension valve, vehicle suspension system and method
US-12460732-B2 · Nov 4, 2025 · US
Check valve for RAT restow pump
US-12449049-B2 · Oct 21, 2025 · US
Check valve for ram air turbine (rat) re-stow pump
US-2025304277-A1 · Oct 2, 2025 · US
Check valve for rat re-stow pump
US-2025116268-A1 · Apr 10, 2025 · US
Assembly for Preventing a Backflow
US-2025043876-A1 · Feb 6, 2025 · US
Armature Assembly Having a Throttle Module
US-2025012372-A1 · Jan 9, 2025 · US
Valve assembly
US-12098775-B2 · Sep 24, 2024 · US
Non-return check valve and check valve apparatus for vacuum system
US-12085178-B2 · Sep 10, 2024 · US
Variable flow check valve device, suspension valve, vehicle suspension system and method
US-2024295272-A1 · Sep 5, 2024 · US
Check valve for rat restow pump
US-2024287951-A1 · Aug 29, 2024 · US
Check valve having a spherical loading element
US-12066117-B2 · Aug 20, 2024 · US
Non-return check valve and check valve apparatus for vacuum system
US-2023296183-A1 · Sep 21, 2023 · US
Valve assembly
US-11746915-B2 · Sep 5, 2023 · US
Valve Assembly
US-2023243434-A1 · Aug 3, 2023 · US
Check valve and brake system including same
US-2023160486-A1 · May 25, 2023 · US
Ball-type downhole valve
US-11643907-B2 · May 9, 2023 · US
Vacuum pump
US-2023081019-A1 · Mar 16, 2023 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16K15/042?
- CPC F16K15/042 is the Cooperative Patent Classification code for “with a plurality of balls.”
- How many patents are filed under CPC F16K15/042 (with a plurality of balls)?
- Our database includes 45 publications tagged with this CPC code.
- Is patent activity under CPC F16K15/042 growing?
- Publication counts under this code: 5 in 2024 vs 6 in 2025 (latest complete years).