Gas intake device having two asymmetrical intake ducts
US-11578644-B2 · Feb 14, 2023 · US
having multiple air inlets
having multiple air inlets · 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 | F02B31/08 |
| Official title | having multiple air inlets |
| Display label | having multiple air inlets |
| Total patents | 48 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 5 |
| 2017 | 2 |
| 2018 | 3 |
| 2019 | 2 |
| 2020 | 10 |
| 2021 | 16 |
| 2022 | 7 |
| 2023 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Control apparatus for compression-ignition type engine
US-11448156-B2 · Sep 20, 2022 · US
Gas intake device having two asymmetrical intake ducts
US-2022170412-A1 · Jun 2, 2022 · US
Control apparatus for compression-ignition type engine
US-11326508-B2 · May 10, 2022 · US
Control apparatus for compression-ignition type engine
US-11313269-B2 · Apr 26, 2022 · US
Engine system
US-11248520-B2 · Feb 15, 2022 · US
Engine
US-11225930-B2 · Jan 18, 2022 · US
Control apparatus for compression-ignition type engine
US-11220972-B2 · Jan 11, 2022 · US
Control apparatus for compression-ignition type engine
US-11203969-B2 · Dec 21, 2021 · US
Control apparatus for compression-ignition type engine
US-2021372317-A1 · Dec 2, 2021 · US
Control apparatus for compression-ignition type engine
US-11187179-B2 · Nov 30, 2021 · US
Control apparatus for compression-ignition type engine
US-11111871-B2 · Sep 7, 2021 · US
Control apparatus for compression-ignition type engine
US-11105255-B2 · Aug 31, 2021 · US
Control apparatus for compression-ignition type engine
US-2021239069-A1 · Aug 5, 2021 · US
Control apparatus for compression-ignition type engine
US-2021239068-A1 · Aug 5, 2021 · US
Control apparatus for compression-ignition type engine
US-2021231076-A1 · Jul 29, 2021 · US
Control apparatus for compression-ignition type engine
US-2021222642-A1 · Jul 22, 2021 · US
Control apparatus for compression-ignition type engine
US-2021222610-A1 · Jul 22, 2021 · US
Air intake passage structure for multi-cylinder engine
US-11047350-B2 · Jun 29, 2021 · US
Control apparatus for compression-ignition type engine
US-2021189945-A1 · Jun 24, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02B31/08?
- CPC F02B31/08 is the Cooperative Patent Classification code for “having multiple air inlets.”
- How many patents are filed under CPC F02B31/08 (having multiple air inlets)?
- Our database includes 48 publications tagged with this CPC code.
- Is patent activity under CPC F02B31/08 growing?
- Publication counts under this code: 7 in 2022 vs 1 in 2023 (latest complete years).