Control mechanism for stepless transmission
US-2019390767-A1 · Dec 26, 2019 · US
Multi-cylinder machines or pumps characterised by number or arrangement of cylinders (machines or pumps with pistons coacting within one cylinder F04B3/00)
Multi-cylinder machines or pumps characterised by number or arrangement of cylinders (machines or pumps with pistons coacting within one cylinder F04B3/00) · 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 | F04B1/00 |
| Official title | Multi-cylinder machines or pumps characterised by number or arrangement of cylinders (machines or pumps with pistons coacting within one cylinder F04B3/00) |
| Display label | Multi-cylinder machines or pumps characterised by number or arrangement of cylinders (machines or pumps with pistons coacting within one cylinder F04B3/00) |
| Total patents | 167 |
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 | 7 |
| 2017 | 14 |
| 2018 | 22 |
| 2019 | 20 |
| 2020 | 15 |
| 2021 | 20 |
| 2022 | 16 |
| 2023 | 16 |
| 2024 | 18 |
| 2025 | 12 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Metal-to-metal sealed power connection for submersible pump motor
US-10502004-B2 · Dec 10, 2019 · US
Pump fluid end with integrated web portion
US-2019301447-A1 · Oct 3, 2019 · US
Method for controlling a fuel pump for a motor vehicle
US-2019264631-A1 · Aug 29, 2019 · US
Reducing fluid pressure spikes in a pumping system
US-10393108-B2 · Aug 27, 2019 · US
System for detecting failure location in a pump
US-10378537-B2 · Aug 13, 2019 · US
Apparatus and method for controlling a device
US-10333443-B2 · Jun 25, 2019 · US
Pump fluid end with integrated web portion
US-10330097-B2 · Jun 25, 2019 · US
Cavitation Avoidance System
US-2019178234-A1 · Jun 13, 2019 · US
Pump, in particular high-pressure fuel pump
US-10280884-B2 · May 7, 2019 · US
Self-aligning mud pump assembly
US-10246955-B2 · Apr 2, 2019 · US
Systems and methods for controlling multi-chamber subsea pumps
US-10180134-B1 · Jan 15, 2019 · US
Systems and methods for controlling multi-chamber subsea pumps
US-2019003473-A1 · Jan 3, 2019 · US
Reciprocating piston
US-2018355865-A1 · Dec 13, 2018 · US
Hydraulic pump
US-2018335024-A1 · Nov 22, 2018 · US
High-pressure fuel pump
US-2018306151-A1 · Oct 25, 2018 · US
Fluidic apparatus and methods useful for chemical and biological reactions
US-2018280975-A1 · Oct 4, 2018 · US
Variable-Capacity Compressor, Two-Stage Compression System and Control Method Thereof
US-2018274822-A1 · Sep 27, 2018 · US
Pump fluid end with integrated web portion
US-2018230977-A1 · Aug 16, 2018 · US
Pump unit for a high-pressure pump
US-10047740-B2 · Aug 14, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04B1/00?
- CPC F04B1/00 is the Cooperative Patent Classification code for “Multi-cylinder machines or pumps characterised by number or arrangement of cylinders (machines or pumps with pistons coacting within one cylinder F04B3/00).”
- How many patents are filed under CPC F04B1/00 (Multi-cylinder machines or pumps characterised by number or arrangement of cylinders (machines or pumps with pistons coacting within one cylinder F04B3/00))?
- Our database includes 167 publications tagged with this CPC code.
- Is patent activity under CPC F04B1/00 growing?
- Publication counts under this code: 18 in 2024 vs 12 in 2025 (latest complete years).