Piston for an internal combustion engine
US-9784211-B2 · Oct 10, 2017 · US
by welding
by welding · 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 | F02F2003/0061 |
| Official title | {by welding} |
| Display label | by welding |
| Total patents | 162 |
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 | 28 |
| 2017 | 21 |
| 2018 | 21 |
| 2019 | 28 |
| 2020 | 19 |
| 2021 | 8 |
| 2022 | 7 |
| 2023 | 6 |
| 2024 | 4 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Complex-shaped forged piston oil galleries
US-9739234-B2 · Aug 22, 2017 · US
Piston with cooling gallery radiator and method of construction thereof
US-2017211459-A1 · Jul 27, 2017 · US
Piston including a composite layer applied to a metal substrate
US-2017184052-A1 · Jun 29, 2017 · US
Piston for an internal combustion engine
US-2017175671-A1 · Jun 22, 2017 · US
Method of Producing a Cooling Channel System for Internal Combustion Engines and Piston Produced in This Way
US-2017173665-A1 · Jun 22, 2017 · US
Piston with sealed cooling gallery containing a thermally conductive composition
US-2017159604-A1 · Jun 8, 2017 · US
Gap geometry in a cohesively joined cooling-channel piston
US-2017138297-A1 · May 18, 2017 · US
Method for producing a piston
US-2017107936-A1 · Apr 20, 2017 · US
Method for producing a piston
US-9611804-B2 · Apr 4, 2017 · US
Laser welded piston assembly
US-9593641-B2 · Mar 14, 2017 · US
Piston with low overall height
US-2017058824-A1 · Mar 2, 2017 · US
Elongate cooling channel inlet for cooling channel pistons and method for operating
US-2017030291-A1 · Feb 2, 2017 · US
Piston thermal management in an opposed-piston engine
US-2017009700-A1 · Jan 12, 2017 · US
Piston for internal combustion engines
US-9518531-B2 · Dec 13, 2016 · US
Piston with complex shaped combustion bowl and cooling gallery and method of construction thereof
US-2016305365-A1 · Oct 20, 2016 · US
Piston thermal management in an opposed-piston engine
US-9464592-B2 · Oct 11, 2016 · US
Method for producing a piston for an internal combustion engine and piston produced by said method
US-2016288275-A1 · Oct 6, 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
Method for producing a piston for an internal combustion engine and piston produced by said method
US-2016281636-A1 · Sep 29, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02F2003/0061?
- CPC F02F2003/0061 is the Cooperative Patent Classification code for “by welding.”
- How many patents are filed under CPC F02F2003/0061 (by welding)?
- Our database includes 162 publications tagged with this CPC code.
- Is patent activity under CPC F02F2003/0061 growing?
- Publication counts under this code: 4 in 2024 vs 2 in 2025 (latest complete years).