Melting Furnace and Method for Melting a Metal Material
US-2026071819-A1 · Mar 12, 2026 · US
Arrangements of heating devices
Arrangements of heating 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 | F27B3/20 |
| Official title | Arrangements of heating devices |
| Display label | Arrangements of heating devices |
| Total patents | 31 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 6 |
| 2017 | 5 |
| 2018 | 2 |
| 2019 | 2 |
| 2020 | 2 |
| 2021 | 1 |
| 2022 | 4 |
| 2023 | 1 |
| 2024 | 2 |
| 2025 | 3 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Stack melting apparatus
US-2025180292-A1 · Jun 5, 2025 · US
Hybrid recycling furnace using immersion melting equipment
US-2025172338-A1 · May 29, 2025 · US
Method of producing molten iron
US-2025003684-A1 · Jan 2, 2025 · US
Electric furnace and steelmaking method
US-2024191315-A1 · Jun 13, 2024 · US
Burner with imaging device, electric furnace provided with said burner, and method for manufacturing molten iron using said electric furnace
US-2024102737-A1 · Mar 28, 2024 · US
Method for producing metal ingot
US-11833582-B2 · Dec 5, 2023 · US
Melting furnace electrode handling devices
US-11523477-B2 · Dec 6, 2022 · US
Method for producing metal ingot
US-11498118-B2 · Nov 15, 2022 · US
Method for operating a batch furnace comprising the preheating of a fluid upstream of the furnace
US-11378338-B2 · Jul 5, 2022 · US
Melting furnace with simultaneously rotatable and movable electrode rod
US-11371779-B2 · Jun 28, 2022 · US
Melting furnace electrode handling devices
US-2021329752-A1 · Oct 21, 2021 · US
Method for producing metal ingot
US-2020164432-A1 · May 28, 2020 · US
Method for producing metal ingot
US-2020122226-A1 · Apr 23, 2020 · US
Method for operation a batch furnace comprising the preheating of a fluid upstream of the furnace
US-2019331423-A1 · Oct 31, 2019 · US
Immersion heater for molten metal
US-10309725-B2 · Jun 4, 2019 · US
Method for operating an electric arc furnace and melting plant having an electric arc furnace operated according to said method
US-9949322-B2 · Apr 17, 2018 · US
Fixed-type electric furnace and molten steel production method
US-9932649-B2 · Apr 3, 2018 · US
Fiber oxidation oven with multiple independently controllable heating systems
US-9809909-B2 · Nov 7, 2017 · US
Fiber oxidation oven with multiple independently controllable heating systems
US-2017107646-A1 · Apr 20, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F27B3/20?
- CPC F27B3/20 is the Cooperative Patent Classification code for “Arrangements of heating devices.”
- How many patents are filed under CPC F27B3/20 (Arrangements of heating devices)?
- Our database includes 31 publications tagged with this CPC code.
- Is patent activity under CPC F27B3/20 growing?
- Publication counts under this code: 2 in 2024 vs 3 in 2025 (latest complete years).