Control plate for a hydraulic machine
US-2026028970-A1 · Jan 29, 2026 · US
Particularities in the contacting area between cylinder barrel and valve plate
Particularities in the contacting area between cylinder barrel and 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 | F03C1/0647 |
| Official title | {Particularities in the contacting area between cylinder barrel and valve plate} |
| Display label | Particularities in the contacting area between cylinder barrel and valve plate |
| Total patents | 45 |
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 | 1 |
| 2016 | 2 |
| 2017 | 1 |
| 2018 | 2 |
| 2019 | 4 |
| 2020 | 2 |
| 2021 | 9 |
| 2022 | 4 |
| 2023 | 10 |
| 2024 | 6 |
| 2025 | 2 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Actuation system for a motor
US-12516662-B2 · Jan 6, 2026 · US
Method for self-compensation structure of cam-lobe hydraulic motor plate distribution system
US-12503993-B2 · Dec 23, 2025 · US
Valve plate, cylinder block, and hydraulic pump/motor
US-12188459-B2 · Jan 7, 2025 · US
Actuation system for a motor
US-2024318642-A1 · Sep 26, 2024 · US
Design method for self-compensation structure of cam-lobe hydraulic motor plate distribution system
US-2024280120-A1 · Aug 22, 2024 · US
Valve plate, cylinder block, and hydraulic motor
US-11994098-B2 · May 28, 2024 · US
Hydraulic pump/motor
US-11994097-B2 · May 28, 2024 · US
Sealing assembly and hydraulic piston pump / motor
US-2024125310-A1 · Apr 18, 2024 · US
Hydraulic piston machine
US-11952987-B2 · Apr 9, 2024 · US
Valve plate, cylinder block, and hydraulic pump/motor
US-2023304481-A1 · Sep 28, 2023 · US
Piston of a hydraulic machine and hydraulic piston machine
US-11754059-B2 · Sep 12, 2023 · US
Valve plate, cylinder block, and hydraulic motor
US-2023279833-A1 · Sep 7, 2023 · US
Axial piston machine with high drive rotational speed
US-11746762-B2 · Sep 5, 2023 · US
Control Plate for an Axial Piston Machine, and an Axial Piston Machine comprising a Control Plate
US-2023127532-A1 · Apr 27, 2023 · US
Hydrostatic axial piston machine
US-11619203-B2 · Apr 4, 2023 · US
Hydrostatic axial piston machine of swash plate construction
US-11598322-B2 · Mar 7, 2023 · US
Rotary axial piston machine with hydrostatic pressing device seal arrangement
US-11591910-B2 · Feb 28, 2023 · US
Hydraulic pump/motor
US-2023021713-A1 · Jan 26, 2023 · US
Valve plate assembly
US-11555488-B2 · Jan 17, 2023 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F03C1/0647?
- CPC F03C1/0647 is the Cooperative Patent Classification code for “Particularities in the contacting area between cylinder barrel and valve plate.”
- How many patents are filed under CPC F03C1/0647 (Particularities in the contacting area between cylinder barrel and valve plate)?
- Our database includes 45 publications tagged with this CPC code.
- Is patent activity under CPC F03C1/0647 growing?
- Publication counts under this code: 6 in 2024 vs 2 in 2025 (latest complete years).