Multi-scale test device for crystallization performance of high-temperature melts
US-2025297806-A1 · Sep 25, 2025 · US
Arrangements of air or gas supply devices
Arrangements of air or gas supply devices · 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 | F27B3/22 |
| Official title | Arrangements of air or gas supply devices |
| Display label | Arrangements of air or gas supply devices |
| Total patents | 63 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 8 |
| 2017 | 10 |
| 2018 | 4 |
| 2019 | 5 |
| 2020 | 3 |
| 2021 | 3 |
| 2022 | 5 |
| 2023 | 5 |
| 2024 | 8 |
| 2025 | 5 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Biomass direct reduced iron
US-2025179596-A1 · Jun 5, 2025 · US
Electric furnace
US-2025093100-A1 · Mar 20, 2025 · US
Smelting unit for steel production with a tap weight of between 60 t and 350 t
US-2025043370-A1 · Feb 6, 2025 · US
Immersion device for temperature measurement and method for position detection
US-12123780-B2 · Oct 22, 2024 · US
Method for smelting low nitrogen steel using electric furnace
US-12018341-B2 · Jun 25, 2024 · US
Electric furnace and steelmaking method
US-2024191315-A1 · Jun 13, 2024 · US
Method of operating an electric arc furnace and steel mill
US-2024191314-A1 · Jun 13, 2024 · US
Refining vessel for high-temperature melt
US-11976340-B2 · May 7, 2024 · US
Molten iron refining method
US-2024076754-A1 · Mar 7, 2024 · US
Top-blowing lance for converter, method for adding auxiliary raw material, and method for refining of molten iron
US-2024076755-A1 · Mar 7, 2024 · US
Refining method of molten iron and manufacturing method of molten steel using same
US-2024068060-A1 · Feb 29, 2024 · US
Method and smelting unit for pyrometallurgical smelting of metal-containing raw materials, waste materials and/or secondary waste materials
US-2023416869-A1 · Dec 28, 2023 · US
Pipe flange coupling device, a pipe assembly and a top-submerged-lance (TSL) system
US-11835160-B2 · Dec 5, 2023 · US
Method for simultaneously injecting a fuel gas and an oxygen-rich gas into a unit
US-2023279516-A1 · Sep 7, 2023 · US
Blast lance for gas blowing, its use and method of production
US-2023228491-A1 · Jul 20, 2023 · US
Multi-purpose pump system for a metal furnace and related methods
US-2023147586-A1 · May 11, 2023 · US
Electric furnace and method for melting and reducing iron oxide-containing iron raw material
US-11536514-B2 · Dec 27, 2022 · US
Pipe flange coupling device, a pipe assembly and a top-submerged-lance (tsl) system
US-2022364661-A1 · Nov 17, 2022 · US
Immersion device for temperature measurement and method for position detection
US-2022244107-A1 · Aug 4, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F27B3/22?
- CPC F27B3/22 is the Cooperative Patent Classification code for “Arrangements of air or gas supply devices.”
- How many patents are filed under CPC F27B3/22 (Arrangements of air or gas supply devices)?
- Our database includes 63 publications tagged with this CPC code.
- Is patent activity under CPC F27B3/22 growing?
- Publication counts under this code: 8 in 2024 vs 5 in 2025 (latest complete years).