Metal Diaphragm Metal Damper and Fuel Pump Provided With Same
US-2022082072-A1 · Mar 17, 2022 · US
with a fluid spring
with a fluid spring · 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 | F04B11/0016 |
| Official title | {with a fluid spring} |
| Display label | with a fluid spring |
| Total patents | 84 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 5 |
| 2017 | 9 |
| 2018 | 10 |
| 2019 | 8 |
| 2020 | 12 |
| 2021 | 11 |
| 2022 | 10 |
| 2023 | 5 |
| 2024 | 4 |
| 2025 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Pulsation dampener with gas retention
US-11193506-B2 · Dec 7, 2021 · US
Pneumatic surge suppressor
US-2021310481-A1 · Oct 7, 2021 · US
Gas-liquid Coupling Type Fluid Pulsation Attenuator
US-2021293257-A1 · Sep 23, 2021 · US
Metal diaphragm damper
US-2021285589-A1 · Sep 16, 2021 · US
Method for manufacturing assembly, parts set, method for manufacturing fuel injection pump, and fuel injection pump
US-2021215127-A1 · Jul 15, 2021 · US
Self-regulating frac pump suction stabilizer/dampener
US-2021198995-A1 · Jul 1, 2021 · US
Pulsation damper and fuel pump device
US-10982631-B2 · Apr 20, 2021 · US
Hydraulic wave tuner
US-10927526-B1 · Feb 23, 2021 · US
Plunger pump
US-10907597-B2 · Feb 2, 2021 · US
High pressure pump
US-10883463-B2 · Jan 5, 2021 · US
Damper device with a plurality of stacked diaphragms coupled together by a coupler having holders forming a space provided between a peripheral weld of the diaphragms and the coupler
US-10883462-B2 · Jan 5, 2021 · US
High-pressure fuel pump
US-10859048-B2 · Dec 8, 2020 · US
High-pressure fuel pump for a fuel injection system
US-10837430-B2 · Nov 17, 2020 · US
Systems and methods for hydrate management
US-10815977-B2 · Oct 27, 2020 · US
Active surge chamber
US-10788846-B2 · Sep 29, 2020 · US
Dampening element for fluid management system
US-2020200313-A1 · Jun 25, 2020 · US
Manifold and methods of manufacturing same
US-10670176-B2 · Jun 2, 2020 · US
Diaphragm cell for damping pressure pulsations in a low-pressure region of a piston pump
US-10662931-B2 · May 26, 2020 · US
Pulsation dampener with gas retention
US-2020159112-A1 · May 21, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04B11/0016?
- CPC F04B11/0016 is the Cooperative Patent Classification code for “with a fluid spring.”
- How many patents are filed under CPC F04B11/0016 (with a fluid spring)?
- Our database includes 84 publications tagged with this CPC code.
- Is patent activity under CPC F04B11/0016 growing?
- Publication counts under this code: 4 in 2024 vs 6 in 2025 (latest complete years).