Air amount adjustment valve and multiple throttle device
US-12253045-B2 · Mar 18, 2025 · US
having slidably-mounted valve members; having valve members movable longitudinally of conduit
having slidably-mounted valve members; having valve members movable longitudinally of conduit · 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 | F02D9/12 |
| Official title | having slidably-mounted valve members; having valve members movable longitudinally of conduit |
| Display label | having slidably-mounted valve members; having valve members movable longitudinally of conduit |
| Total patents | 40 |
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 | 4 |
| 2016 | 6 |
| 2017 | 6 |
| 2018 | 9 |
| 2019 | 6 |
| 2020 | 3 |
| 2021 | 1 |
| 2023 | 2 |
| 2024 | 2 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Air amount adjustment valve and multiple throttle device
US-2024309818-A1 · Sep 19, 2024 · US
System and method for air filtration with self-cleaning filter medium for an aircraft engine
US-11993390-B2 · May 28, 2024 · US
System and method for air filtration with self-cleaning filter medium for an aircraft engine
US-2023264828-A1 · Aug 24, 2023 · US
System and method for air filtration with self-cleaning filter medium for an aircraft engine
US-11661205-B2 · May 30, 2023 · US
System and method for air filtration with self-cleaning filter medium for an aircraft engine
US-2021403172-A1 · Dec 30, 2021 · US
Methods and systems for an engine
US-10823037-B2 · Nov 3, 2020 · US
Exhaust gas control valve and assembly including the same
US-10619751-B2 · Apr 14, 2020 · US
Exhaust gas control valve and assembly including the same
US-2020080654-A1 · Mar 12, 2020 · US
Air shutoff valve
US-10458375-B1 · Oct 29, 2019 · US
Exhaust gas pressure regulator for a combustion engine
US-10436107-B2 · Oct 8, 2019 · US
Composite intake system and method of the rotary engine with variable intake manifold
US-10364778-B2 · Jul 30, 2019 · US
Methods and systems for an engine
US-2019107030-A1 · Apr 11, 2019 · US
Method for engine drivability robustness by variable indexing and vehicle thereof
US-10227946-B2 · Mar 12, 2019 · US
Methods and systems for an engine
US-10190474-B2 · Jan 29, 2019 · US
Variable flow valve having metered flow orifice
US-10132424-B2 · Nov 20, 2018 · US
Gas mixer for internal combustion engines
US-10113512-B2 · Oct 30, 2018 · US
A composite intake system and method of the rotary engine with variable intake manifold
US-2018274501-A1 · Sep 27, 2018 · US
Method for engine drivability robustness by variable indexing and vehicle thereof
US-2018171929-A1 · Jun 21, 2018 · US
An exhaust gas pressure regulator for a combustion engine
US-2018135510-A1 · May 17, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02D9/12?
- CPC F02D9/12 is the Cooperative Patent Classification code for “having slidably-mounted valve members; having valve members movable longitudinally of conduit.”
- How many patents are filed under CPC F02D9/12 (having slidably-mounted valve members; having valve members movable longitudinally of conduit)?
- Our database includes 40 publications tagged with this CPC code.
- Is patent activity under CPC F02D9/12 growing?
- Publication counts under this code: 2 in 2024 vs 1 in 2025 (latest complete years).