Bidirectional piston seals with pressure compensation
US-10480298-B2 · Nov 19, 2019 · US
Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation · 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 | F04B11/00 |
| Official title | Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation |
| Display label | Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation |
| Total patents | 200 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 10 |
| 2016 | 16 |
| 2017 | 17 |
| 2018 | 14 |
| 2019 | 28 |
| 2020 | 22 |
| 2021 | 32 |
| 2022 | 15 |
| 2023 | 24 |
| 2024 | 12 |
| 2025 | 7 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
System and method for providing stable fluid flow
US-10466155-B2 · Nov 5, 2019 · US
Piston Pump for Conveying Pressure Medium in a Pressure Medium Circuit
US-2019176786-A1 · Jun 13, 2019 · US
High pressure pump
US-10132311-B2 · Nov 20, 2018 · US
Pulsation damping system
US-10100855-B2 · Oct 16, 2018 · US
Pump device
US-10087917-B2 · Oct 2, 2018 · US
Diaphragm Cell For Damping Pressure Pulsations in a Low-Pressure Region of a Piston Pump
US-2018274525-A1 · Sep 27, 2018 · US
Pulsation damper suitable for hygienic processing lines
US-10060566-B2 · Aug 28, 2018 · US
Controlled pump augmentation for active vibration isolation
US-10012217-B2 · Jul 3, 2018 · US
High-pressure fuel pump
US-2018171992-A1 · Jun 21, 2018 · US
Hydraulic transmission
US-9976641-B2 · May 22, 2018 · US
Continuous sample delivery peristaltic pump
US-2018128266-A1 · May 10, 2018 · US
High pressure pump
US-9932949-B2 · Apr 3, 2018 · US
Motor/pump unit having a single elastic diaphragm
US-2018073500-A1 · Mar 15, 2018 · US
Hydrostatic Axial Piston Machine
US-2018058432-A1 · Mar 1, 2018 · US
Method of dampening pressure pulsations in a working fluid within a conduit
US-2018031165-A1 · Feb 1, 2018 · US
High-pressure pump and production method thereof
US-2018010602-A1 · Jan 11, 2018 · US
Bellows pump apparatus
US-2017350382-A1 · Dec 7, 2017 · US
Method of dampening pressure pulsations in a working fluid within a conduit
US-9829139-B2 · Nov 28, 2017 · US
Fluid end with modular intake manifold
US-9816494-B2 · Nov 14, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04B11/00?
- CPC F04B11/00 is the Cooperative Patent Classification code for “Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation.”
- How many patents are filed under CPC F04B11/00 (Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation)?
- Our database includes 200 publications tagged with this CPC code.
- Is patent activity under CPC F04B11/00 growing?
- Publication counts under this code: 12 in 2024 vs 7 in 2025 (latest complete years).