Substrate processing apparatus
US-12498174-B2 · Dec 16, 2025 · US
Doors
Doors · 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 | F27D1/1858 |
| Official title | {Doors} |
| Display label | Doors |
| Total patents | 28 |
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 | 3 |
| 2016 | 3 |
| 2017 | 3 |
| 2018 | 3 |
| 2019 | 1 |
| 2020 | 2 |
| 2021 | 1 |
| 2022 | 3 |
| 2023 | 2 |
| 2024 | 3 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Shutter apparatus and substrate treating apparatus including the same
US-12411427-B2 · Sep 9, 2025 · US
Injector configured for arrangement within a reactor of a vertical furnace and vertical furnace
US-12410518-B2 · Sep 9, 2025 · US
Heat treatment apparatus
US-2025230980-A1 · Jul 17, 2025 · US
Heat treatment system and atmosphere substitution structure of heat treatment furnace
US-2024426554-A1 · Dec 26, 2024 · US
Batch furnace assembly and method of operating a batch furnace assembly
US-11971217-B2 · Apr 30, 2024 · US
Access port for a thermogravimetric analyzer furnace
US-11899033-B2 · Feb 13, 2024 · US
Substrate processing apparatus
US-2023213283-A1 · Jul 6, 2023 · US
Slag door for a melting furnace
US-11614283-B2 · Mar 28, 2023 · US
Batch furnace assembly and method of operating a batch furnace assembly
US-2022412652-A1 · Dec 29, 2022 · US
Electric furnace
US-11473841-B2 · Oct 18, 2022 · US
Shutter apparatus and substrate treating apparatus including the same
US-2022075281-A1 · Mar 10, 2022 · US
Injector configured for arrangement within a reactor of a vertical furnace and vertical furnace
US-2021324518-A1 · Oct 21, 2021 · US
Slag door for a melting furnace
US-2020309456-A1 · Oct 1, 2020 · US
Electric furnace
US-2020064071-A1 · Feb 27, 2020 · US
Sample heating apparatus
US-10371448-B2 · Aug 6, 2019 · US
Sample heating apparatus
US-2018202717-A1 · Jul 19, 2018 · US
Access port for a thermogravimetric analyzer furnace
US-2018156705-A1 · Jun 7, 2018 · US
Method of manufacturing a slag discharge door
US-9964360-B2 · May 8, 2018 · US
Method of preheating a set of shell molds for lost-wax casting
US-9694421-B2 · Jul 4, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F27D1/1858?
- CPC F27D1/1858 is the Cooperative Patent Classification code for “Doors.”
- How many patents are filed under CPC F27D1/1858 (Doors)?
- Our database includes 28 publications tagged with this CPC code.
- Is patent activity under CPC F27D1/1858 growing?
- Publication counts under this code: 3 in 2024 vs 4 in 2025 (latest complete years).