Air-leading type stratified scavenging two-stroke internal combustion engine, and engine working machine
US-11913371-B2 · Feb 27, 2024 · US
Means for reducing the mixing of charge and combustion residues or for preventing escape of fresh charge through outlet ports not provided for in, or of interest apart from, subgroups F02B25/02 - F02B25/18
Means for reducing the mixing of charge and combustion residues or for preventing escape of fresh charge through outlet ports not provided for in, or of interest apart from, subgroups F02B25/02 - F02B25/18 · 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 | F02B25/20 |
| Official title | Means for reducing the mixing of charge and combustion residues or for preventing escape of fresh charge through outlet ports not provided for in, or of interest apart from, subgroups F02B25/02 - F02B25/18 |
| Display label | Means for reducing the mixing of charge and combustion residues or for preventing escape of fresh charge through outlet ports not provided for in, or of interest apart from, subgroups F02B25/02 - F02B25/18 |
| Total patents | 37 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 7 |
| 2017 | 3 |
| 2018 | 6 |
| 2019 | 4 |
| 2020 | 1 |
| 2021 | 4 |
| 2022 | 2 |
| 2023 | 3 |
| 2024 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Two-stroke internal combustion engine
US-11598247-B2 · Mar 7, 2023 · US
Two-stroke engine
US-2023017963-A1 · Jan 19, 2023 · US
Two-stroke engine
US-11549430-B1 · Jan 10, 2023 · US
Air-leading type stratified scavenging two-stroke internal combustion engine, and engine working machine
US-2022325659-A1 · Oct 13, 2022 · US
Two-stroke internal combustion engine
US-2022154629-A1 · May 19, 2022 · US
Two-stroke engine
US-11181037-B2 · Nov 23, 2021 · US
Turbocharger for an internal combustion engine
US-11131242-B2 · Sep 28, 2021 · US
Two-stroke engine
US-2021285362-A1 · Sep 16, 2021 · US
Turbocharger for an internal combustion engine
US-2021010420-A1 · Jan 14, 2021 · US
Exhaust-tuning port and timing and combustion chamber shape
US-10648399-B2 · May 12, 2020 · US
Exhaust valve assembly for a two-stroke internal combustion engine and method for cleaning same
US-10371021-B2 · Aug 6, 2019 · US
Carburetor and method for operating an internal combustion engine having said carburetor
US-10337458-B2 · Jul 2, 2019 · US
Exhaust-tuning port and timing and combustion chamber shape
US-2019101050-A1 · Apr 4, 2019 · US
Exhaust valve assembly for a two-stroke internal combustion engine and method for cleaning same
US-2019003350-A1 · Jan 3, 2019 · US
Exhaust valve assembly for a two-stroke internal combustion engine and method for cleaning same
US-10113452-B2 · Oct 30, 2018 · US
Air cleaner for stratified scavenging two-stroke internal combustion engine
US-10113517-B2 · Oct 30, 2018 · US
Suction tube unit of stratified scavenging engine
US-9988970-B2 · Jun 5, 2018 · US
Air leading type two-stroke engine and intake system for same, and carburetor
US-9988971-B2 · Jun 5, 2018 · US
Carburetor for stratified scavenging two-stroke engine
US-9903314-B2 · Feb 27, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02B25/20?
- CPC F02B25/20 is the Cooperative Patent Classification code for “Means for reducing the mixing of charge and combustion residues or for preventing escape of fresh charge through outlet ports not provided for in, or of interest apart from, subgroups F02B25/02 - F02B25/18.”
- How many patents are filed under CPC F02B25/20 (Means for reducing the mixing of charge and combustion residues or for preventing escape of fresh charge through outlet ports not provided for in, or of interest apart from, subgroups F02B25/02 - F02B25/18)?
- Our database includes 37 publications tagged with this CPC code.
- Is patent activity under CPC F02B25/20 growing?
- Publication counts under this code: 3 in 2023 vs 1 in 2024 (latest complete years).