Flow control apparatus
US-10519941-B2 · Dec 31, 2019 · US
using a special shape of fluid pass, e.g. throttles, ducts
using a special shape of fluid pass, e.g. throttles, ducts · 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 | F04B11/0091 |
| Official title | {using a special shape of fluid pass, e.g. throttles, ducts} |
| Display label | using a special shape of fluid pass, e.g. throttles, ducts |
| Total patents | 124 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 9 |
| 2016 | 14 |
| 2017 | 9 |
| 2018 | 13 |
| 2019 | 17 |
| 2020 | 10 |
| 2021 | 14 |
| 2022 | 9 |
| 2023 | 10 |
| 2024 | 11 |
| 2025 | 6 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Hydraulic pump with inlet baffle
US-2019390663-A1 · Dec 26, 2019 · US
Compressor with flooded start control
US-10480495-B2 · Nov 19, 2019 · US
High pressure pump for complex injection engines
US-10465644-B2 · Nov 5, 2019 · US
High-pressure fuel pump
US-10443587-B2 · Oct 15, 2019 · US
Automotive fuel pump
US-10443595-B2 · Oct 15, 2019 · US
Plunger pump
US-2019301413-A1 · Oct 3, 2019 · US
High-Pressure Fuel Pump For A Fuel Injection System
US-2019293037-A1 · Sep 26, 2019 · US
Device for choking a fluid flow and corresponding piston pump for delivering fluids
US-10415553-B2 · Sep 17, 2019 · US
Hydrostatic Piston Engine
US-2019178226-A1 · Jun 13, 2019 · US
High pressure pump
US-2019145364-A1 · May 16, 2019 · US
Pumping device for a waste heat recovery apparatus in a motor vehicle
US-10280905-B2 · May 7, 2019 · US
Device for choking a fluid flow and corresponding piston pump for delivering fluids
US-10247176-B2 · Apr 2, 2019 · US
Hydrostatic axial piston machine
US-10240587-B2 · Mar 26, 2019 · US
Blood treatment device comprising a metering line having a membrane pump and a valve and method for metering
US-2019022297-A1 · Jan 24, 2019 · US
Device for Choking a Fluid Flow and Corresponding Piston Pump for Delivering Fluids
US-2018372077-A1 · Dec 27, 2018 · US
Compressor With Flooded Start Control
US-2018320672-A1 · Nov 8, 2018 · US
Liquid pump with cavitation mitigation
US-2018306150-A1 · Oct 25, 2018 · US
Pulsation damping system
US-10100855-B2 · Oct 16, 2018 · US
Pump device
US-10087917-B2 · Oct 2, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04B11/0091?
- CPC F04B11/0091 is the Cooperative Patent Classification code for “using a special shape of fluid pass, e.g. throttles, ducts.”
- How many patents are filed under CPC F04B11/0091 (using a special shape of fluid pass, e.g. throttles, ducts)?
- Our database includes 124 publications tagged with this CPC code.
- Is patent activity under CPC F04B11/0091 growing?
- Publication counts under this code: 11 in 2024 vs 6 in 2025 (latest complete years).