Control System of Work Machine
US-2026078567-A1 · Mar 19, 2026 · US
by turning the valve plate
by turning the valve plate · 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 | F04B1/303 |
| Official title | by turning the valve plate |
| Display label | by turning the valve plate |
| Total patents | 31 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 1 |
| 2017 | 5 |
| 2018 | 1 |
| 2019 | 3 |
| 2020 | 3 |
| 2021 | 5 |
| 2022 | 3 |
| 2023 | 1 |
| 2024 | 6 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Control plate of a hydraulic machine and hydraulic machine
US-12540604-B2 · Feb 3, 2026 · US
Adjustable distribution plate for an axial piston assembly
US-2024337236-A1 · Oct 10, 2024 · US
Axial piston hydraulic machine having a self-adjusting swash plate
US-2024328404-A1 · Oct 3, 2024 · US
Hydraulic pump motor
US-12104569-B2 · Oct 1, 2024 · US
Adjustable distribution plate for an axial piston assembly
US-12092070-B1 · Sep 17, 2024 · US
Control plate of a hydraulic machine and hydraulic machine
US-2024175429-A1 · May 30, 2024 · US
Sealing assembly and hydraulic piston pump / motor
US-2024125310-A1 · Apr 18, 2024 · US
Hydrostatic axial piston machine
US-11619203-B2 · Apr 4, 2023 · US
Hydraulic pump motor
US-2022275792-A1 · Sep 1, 2022 · US
Axial piston-type hydraulic rotary machine
US-11396872-B2 · Jul 26, 2022 · US
Hydrostatic Axial Piston Machine
US-2022106945-A1 · Apr 7, 2022 · US
Axial piston machine with pressure relief in the through drive space
US-11162481-B2 · Nov 2, 2021 · US
Axial Piston-Type Hydraulic Rotary Machine
US-2021277891-A1 · Sep 9, 2021 · US
Axial piston machine with valve slides integrated into the connector plate
US-11111899-B2 · Sep 7, 2021 · US
Rotary type valve plate compressor
US-11078892-B2 · Aug 3, 2021 · US
Bent-axis axial-piston hydraulic machine
US-2021108623-A1 · Apr 15, 2021 · US
Axial Piston Machine with Valve Slides Integrated into the Connector Plate
US-2020326003-A1 · Oct 15, 2020 · US
Hydraulic pump-motor
US-10598146-B2 · Mar 24, 2020 · US
Rotary type valve plate compressor
US-2020011307-A1 · Jan 9, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04B1/303?
- CPC F04B1/303 is the Cooperative Patent Classification code for “by turning the valve plate.”
- How many patents are filed under CPC F04B1/303 (by turning the valve plate)?
- Our database includes 31 publications tagged with this CPC code.
- Is patent activity under CPC F04B1/303 growing?
- Publication counts under this code: 1 in 2023 vs 6 in 2024 (latest complete years).