Melting method using multiple impacting flames
US-2025362081-A1 · Nov 27, 2025 · US
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Hearths
Hearths · 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 | F27B2003/125 |
| Official title | {Hearths} |
| Display label | Hearths |
| Total patents | 10 |
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 | 1 |
| 2019 | 1 |
| 2020 | 3 |
| 2021 | 2 |
| 2023 | 1 |
| 2024 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Electric furnace
US-11898797-B2 · Feb 13, 2024 · US
Self-crucible wall submerged burner furnace
US-11747084-B2 · Sep 5, 2023 · US
Arc furnace bottom construction
US-11029091-B2 · Jun 8, 2021 · US
Heat-resistant alloy for hearth metal member
US-10982304-B2 · Apr 20, 2021 · US
Self-crucible wall submerged burner furnace
US-2020340746-A1 · Oct 29, 2020 · US
Electric furnace
US-2020080780-A1 · Mar 12, 2020 · US
Heat-resistant alloy for hearth metal member
US-2020071797-A1 · Mar 5, 2020 · US
Arc Furnace Bottom Construction
US-2019301802-A1 · Oct 3, 2019 · US
Casting equipment
US-2015273576-A1 · Oct 1, 2015 · US