Mass Efficient Piston
US-2017363040-A1 · Dec 21, 2017 · 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 | F02F3/28 |
| Official title | — |
| Display label | Mechanical Engineering (mapped technology topic) |
| Total patents | 288 |
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 | 18 |
| 2016 | 32 |
| 2017 | 22 |
| 2018 | 40 |
| 2019 | 34 |
| 2020 | 42 |
| 2021 | 34 |
| 2022 | 27 |
| 2023 | 14 |
| 2024 | 12 |
| 2025 | 9 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Skewed combustion chamber for opposed-piston engines
US-9840965-B2 · Dec 12, 2017 · US
Advanced lean burn injector igniter system
US-9822977-B1 · Nov 21, 2017 · US
Method for producing a cooling channel piston and cooling channel piston produced by such a method
US-2017320129-A1 · Nov 9, 2017 · US
Engine control device
US-2017260921-A1 · Sep 14, 2017 · US
Combustion Chamber Structure for Diesel Engine
US-2017159549-A1 · Jun 8, 2017 · US
Fuel injection control apparatus for internal combustion engine
US-2017145943-A1 · May 25, 2017 · US
Direct-injection internal combustion engine with piston, and method for producing a piston of an internal combustion engine of said type
US-2017107935-A1 · Apr 20, 2017 · US
Control device for direct injection gasoline engines
US-9624820-B2 · Apr 18, 2017 · US
Engine piston
US-9611806-B2 · Apr 4, 2017 · US
Piston for internal combustion engines
US-2016348611-A1 · Dec 1, 2016 · US
Piston top providing structural unit
US-2016341147-A1 · Nov 24, 2016 · US
Piston of an internal combustion engine
US-9476381-B2 · Oct 25, 2016 · US
Ducted Combustion Systems Utilizing Duct Structures
US-2016298529-A1 · Oct 13, 2016 · US
Ducted Combustion Systems Utilizing Curved Ducts
US-2016298528-A1 · Oct 13, 2016 · US
Piston of an internal combustion engine
US-9464593-B2 · Oct 11, 2016 · US
Method for producing a piston for an internal combustion engine and piston produced by said method
US-2016281637-A1 · Sep 29, 2016 · US
Internal combustion engine
US-2016281589-A1 · Sep 29, 2016 · US
Engine
US-2016281600-A1 · Sep 29, 2016 · US
Method for producing a piston for an internal combustion engine and piston produced by said method
US-2016281636-A1 · Sep 29, 2016 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02F3/28?
- CPC F02F3/28 is the Cooperative Patent Classification code for “Mechanical Engineering.”
- How many patents are filed under CPC F02F3/28 (Mechanical Engineering)?
- Our database includes 288 publications tagged with this CPC code.
- Is patent activity under CPC F02F3/28 growing?
- Publication counts under this code: 12 in 2024 vs 9 in 2025 (latest complete years).