Heat treatment apparatus
US-2025230980-A1 · Jul 17, 2025 · US
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Hanging doors and walls
Hanging doors and walls · 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 | F27D2001/1875 |
| Official title | {Hanging doors and walls} |
| Display label | Hanging doors and walls |
| Total patents | 4 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity appears stable based on the most recent years.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 1 |
| 2017 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Slag discharge door device for an electric furnace
US-9664444-B2 · May 30, 2017 · US
Automatic charge hearth access door assembly
US-9234703-B2 · Jan 12, 2016 · US
Automatic charge hearth access door assembly
US-2015168070-A1 · Jun 18, 2015 · US