Single-piece refractory for a water heating assembly
US-2021404650-A1 · Dec 30, 2021 · US
Mixing tubes, air supply regulation
Mixing tubes, air supply regulation · 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 | F23D2203/007 |
| Official title | Mixing tubes, air supply regulation |
| Display label | Mixing tubes, air supply regulation |
| Total patents | 106 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 4 |
| 2017 | 9 |
| 2018 | 11 |
| 2019 | 16 |
| 2020 | 13 |
| 2021 | 10 |
| 2022 | 8 |
| 2023 | 14 |
| 2024 | 4 |
| 2025 | 13 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Premixing device and combustion device equipped with the premixing device
US-2021394134-A1 · Dec 23, 2021 · US
Premixing apparatus and method thereof
US-11105505-B2 · Aug 31, 2021 · US
Gas furnace
US-2020378622-A1 · Dec 3, 2020 · US
Gas burner and domestic cooking appliance
US-2020378597-A1 · Dec 3, 2020 · US
Fuel nozzle assembly, and combustor and gas turbine including the same
US-10845055-B2 · Nov 24, 2020 · US
Multi-cavity gas and air mixing device
US-10823400-B2 · Nov 3, 2020 · US
Fuel injector fixation
US-2020340675-A1 · Oct 29, 2020 · US
Gas inlet fixture and air shutter
US-10794591-B2 · Oct 6, 2020 · US
Burner device
US-2020263871-A1 · Aug 20, 2020 · US
Gas burner for a cooktop appliance
US-10746396-B2 · Aug 18, 2020 · US
Pneumatic actuating injet valve with delayed shutoff
US-2020232640-A1 · Jul 23, 2020 · US
Inward fired low nox premix burner
US-2020124280-A1 · Apr 23, 2020 · US
Double-staged oxy-fuel burner
US-10584051-B2 · Mar 10, 2020 · US
Gas mixer
US-10551055-B2 · Feb 4, 2020 · US
Venturi nozzle and fuel supply device comprising venturi nozzle for controlling a ratio between a fuel gas and an air flow
US-10539323-B2 · Jan 21, 2020 · US
Premixing apparatus
US-10495301-B2 · Dec 3, 2019 · US
Burner
US-10465903-B2 · Nov 5, 2019 · US
Premixing Apparatus and Method Thereof
US-2019293281-A1 · Sep 26, 2019 · US
Combustion apparatus
US-10422527-B2 · Sep 24, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F23D2203/007?
- CPC F23D2203/007 is the Cooperative Patent Classification code for “Mixing tubes, air supply regulation.”
- How many patents are filed under CPC F23D2203/007 (Mixing tubes, air supply regulation)?
- Our database includes 106 publications tagged with this CPC code.
- Is patent activity under CPC F23D2203/007 growing?
- Publication counts under this code: 4 in 2024 vs 13 in 2025 (latest complete years).