Piston pump, particularly a high-pressure fuel pump for an internal combustion engine
US-11168677-B2 · Nov 9, 2021 · US
Supporting or guiding means for the pistons
Supporting or guiding means for the pistons · 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 | F04B1/0439 |
| Official title | Supporting or guiding means for the pistons |
| Display label | Supporting or guiding means for the pistons |
| Total patents | 88 |
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 | 9 |
| 2016 | 5 |
| 2017 | 6 |
| 2018 | 9 |
| 2019 | 9 |
| 2020 | 9 |
| 2021 | 15 |
| 2022 | 6 |
| 2023 | 8 |
| 2024 | 5 |
| 2025 | 6 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
High-power five cylinder plunger pump
US-2021301807-A1 · Sep 30, 2021 · US
Assembled roller tappet
US-11118550-B2 · Sep 14, 2021 · US
Cylinder Block Comprising Piston-Holding Means
US-2021254597-A1 · Aug 19, 2021 · US
Guide for piston of high-pressure pump for vehicle
US-2021180590-A1 · Jun 17, 2021 · US
Multi-point supported five cylinder plunger pump
US-2021123434-A1 · Apr 29, 2021 · US
Semi-trailer-loaded turbine fracturing equipment
US-2021088042-A1 · Mar 25, 2021 · US
Five cylinder plunger pump
US-2021087943-A1 · Mar 25, 2021 · US
Pump unit for feeding fuel, preferably diesel fuel, to an internal combustion engine
US-10954907-B2 · Mar 23, 2021 · US
Pump arrangement for a hydraulic unit having a pump piston
US-10946851-B2 · Mar 16, 2021 · US
Fuel injection pump
US-2021054815-A1 · Feb 25, 2021 · US
Plunger pump
US-10907597-B2 · Feb 2, 2021 · US
Fluid end with integrated valve seat
US-2021017982-A1 · Jan 21, 2021 · US
Easy Change Pump Plunger
US-2020362856-A1 · Nov 19, 2020 · US
Super-power five-cylinder plunger pump
US-2020332788-A1 · Oct 22, 2020 · US
Piston drive device
US-2020271109-A1 · Aug 27, 2020 · US
Assembled roller tappet
US-2020263645-A1 · Aug 20, 2020 · US
Piston Pump, Particularly a High-Pressure Fuel Pump for an Internal Combustion Engine
US-2020224646-A1 · Jul 16, 2020 · US
Piston Pump
US-2020191129-A1 · Jun 18, 2020 · US
Pump Arrangement for a Hydraulic Unit Having a Pump Piston
US-2020180584-A1 · Jun 11, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04B1/0439?
- CPC F04B1/0439 is the Cooperative Patent Classification code for “Supporting or guiding means for the pistons.”
- How many patents are filed under CPC F04B1/0439 (Supporting or guiding means for the pistons)?
- Our database includes 88 publications tagged with this CPC code.
- Is patent activity under CPC F04B1/0439 growing?
- Publication counts under this code: 5 in 2024 vs 6 in 2025 (latest complete years).