Multi-Mode Piston: A Chemical Engineering Building Block
US-2026028983-A1 · Jan 29, 2026 · US
the piston being provided with channels which are coacting with the cylinder and are used as a distribution member for another piston-cylinder unit
the piston being provided with channels which are coacting with the cylinder and are used as a distribution member for another piston-cylinder unit · 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 | F04B53/148 |
| Official title | {the piston being provided with channels which are coacting with the cylinder and are used as a distribution member for another piston-cylinder unit} |
| Display label | the piston being provided with channels which are coacting with the cylinder and are used as a distribution member for another piston-cylinder unit |
| Total patents | 28 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2016 | 2 |
| 2017 | 5 |
| 2018 | 2 |
| 2019 | 7 |
| 2020 | 2 |
| 2021 | 4 |
| 2022 | 3 |
| 2024 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Piston rod rotation features in a spray fluid pump
US-12116997-B2 · Oct 15, 2024 · US
Bulk unloader follower seal
US-12007028-B2 · Jun 11, 2024 · US
Pump device for a brake system of a motor vehicle, brake system
US-11498539-B2 · Nov 15, 2022 · US
Piston for compressor
US-11415126-B2 · Aug 16, 2022 · US
Piston rod rotation features in a spray fluid pump
US-2022025882-A1 · Jan 27, 2022 · US
Piston for compressor
US-2021215153-A1 · Jul 15, 2021 · US
Valve-less variable displacement pump
US-10962014-B2 · Mar 30, 2021 · US
Volumetric pump
US-10920770-B2 · Feb 16, 2021 · US
Pump Device for a Brake System of a Motor Vehicle, Brake System
US-2021016754-A1 · Jan 21, 2021 · US
Rotating piston for pumps
US-10859162-B2 · Dec 8, 2020 · US
Bulk unloader follower seal
US-2020318739-A1 · Oct 8, 2020 · US
Fluted piston components for pumps
US-10428942-B2 · Oct 1, 2019 · US
Rotating piston for pumps
US-2019271396-A1 · Sep 5, 2019 · US
Valve-less variable displacement pump
US-2019226484-A1 · Jul 25, 2019 · US
Rotating piston for pumps
US-10337614-B2 · Jul 2, 2019 · US
Liquid supply device
US-10294929-B2 · May 21, 2019 · US
Liquid crystal pump and method for ejecting liquid crystal using the same
US-10288050-B2 · May 14, 2019 · US
Volumetric pump
US-2019010934-A1 · Jan 10, 2019 · US
Hydraulic drive system for cryogenic pump
US-9915250-B2 · Mar 13, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04B53/148?
- CPC F04B53/148 is the Cooperative Patent Classification code for “the piston being provided with channels which are coacting with the cylinder and are used as a distribution member for another piston-cylinder unit.”
- How many patents are filed under CPC F04B53/148 (the piston being provided with channels which are coacting with the cylinder and are used as a distribution member for another piston-cylinder unit)?
- Our database includes 28 publications tagged with this CPC code.
- Is patent activity under CPC F04B53/148 growing?
- Publication counts under this code: 3 in 2022 vs 2 in 2024 (latest complete years).