Coating for reducing friction in a reciprocating assembly
US-2024191710-A1 · Jun 13, 2024 · US
Mechanical Engineering
Mechanical Engineering · 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 | F04B53/02 |
| Official title | — |
| Display label | Mechanical Engineering (mapped technology topic) |
| Total patents | 170 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 12 |
| 2017 | 19 |
| 2018 | 8 |
| 2019 | 11 |
| 2020 | 16 |
| 2021 | 13 |
| 2022 | 14 |
| 2023 | 22 |
| 2024 | 24 |
| 2025 | 18 |
| 2026 | 9 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Seal
US-2020393045-A1 · Dec 17, 2020 · US
Pump Fluid End With Positional Indifference For Maintenance
US-2020362971-A1 · Nov 19, 2020 · US
Paint sprayer pump cartridge
US-10815990-B2 · Oct 27, 2020 · US
Pump for liquid product comprising a sealing device and spraying installation comprising such a pump
US-2020232456-A1 · Jul 23, 2020 · US
Piston Pump
US-2020191129-A1 · Jun 18, 2020 · US
Bidirectional piston seals with pressure compensation
US-10480298-B2 · Nov 19, 2019 · US
Fluid pump leakage diversion
US-10465678-B2 · Nov 5, 2019 · US
Piston pump and seal ring
US-2019316582-A1 · Oct 17, 2019 · US
Guide ring of a piston pump for a vehicle brake system
US-10435000-B2 · Oct 8, 2019 · US
Piston rod having cap recess
US-10371145-B2 · Aug 6, 2019 · US
Fuel pump apparatus
US-10323615-B2 · Jun 18, 2019 · US
Piston fuel pump for an internal combustion engine
US-10316807-B2 · Jun 11, 2019 · US
Piston seal assembly with controlled leakage
US-10316837-B2 · Jun 11, 2019 · US
Reciprocating compressor, pressure packing, and method
US-10273952-B2 · Apr 30, 2019 · US
Liquid delivery pump
US-10227977-B2 · Mar 12, 2019 · US
High-pressure fuel pump
US-10227976-B2 · Mar 12, 2019 · US
High pressure pump
US-10047743-B2 · Aug 14, 2018 · US
Fuel pump apparatus
US-2018128227-A1 · May 10, 2018 · US
Detecting Fluid Leaks in Pressurized Systems of Waterjet Cutting Systems
US-2018045597-A1 · Feb 15, 2018 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04B53/02?
- CPC F04B53/02 is the Cooperative Patent Classification code for “Mechanical Engineering.”
- How many patents are filed under CPC F04B53/02 (Mechanical Engineering)?
- Our database includes 170 publications tagged with this CPC code.
- Is patent activity under CPC F04B53/02 growing?
- Publication counts under this code: 24 in 2024 vs 18 in 2025 (latest complete years).