A method for manufacturing pig iron in an electrical smelting furnace and associated electrical smelting furnace
US-2026043100-A1 · Feb 12, 2026 · US
Arrangements of devices for discharging
Arrangements of devices for discharging · 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 | F27B3/19 |
| Official title | Arrangements of devices for discharging |
| Display label | Arrangements of devices for discharging |
| Total patents | 45 |
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 | 11 |
| 2016 | 5 |
| 2017 | 5 |
| 2018 | 6 |
| 2019 | 2 |
| 2020 | 3 |
| 2021 | 5 |
| 2022 | 2 |
| 2023 | 1 |
| 2025 | 1 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for manufacturing pig iron into an electrical smelting furnace and associated smelting furnace
US-2026022428-A1 · Jan 22, 2026 · US
A method for manufacturing pig iron in an electrical smelting furnace and associated electrical smelting furnace
US-2026022429-A1 · Jan 22, 2026 · US
A method for manufacturing pig iron in an electrical smelting furnace and associated smelting furnace
US-2026015682-A1 · Jan 15, 2026 · US
Glass melting furnaces and vessels with improved thermal performance
US-2025164187-A1 · May 22, 2025 · US
Slag door for a melting furnace
US-11614283-B2 · Mar 28, 2023 · US
Melting furnace for metallurgical plant and operating method therefor
US-11390927-B2 · Jul 19, 2022 · US
Melting apparatus for the production of steel
US-11338362-B2 · May 24, 2022 · US
Production apparatus and method for electric arc furnace steelmaking with fully continuous ultra-short process
US-2021355554-A1 · Nov 18, 2021 · US
Production apparatus and method for electric arc furnace steelmaking with fully continuous ultra-short process
US-11174524-B1 · Nov 16, 2021 · US
Control method and apparatus for inhibiting slag entrapment in ladle in last stage of pouring during continuous casting
US-11154926-B2 · Oct 26, 2021 · US
Melting furnace for metallurgical plant and operating method therefor
US-2021079489-A1 · Mar 18, 2021 · US
Plasma furnace having lateral discharge gates
US-10914523-B2 · Feb 9, 2021 · US
Slag door for a melting furnace
US-2020309456-A1 · Oct 1, 2020 · US
Molten metal scrap submergence apparatus
US-10731922-B2 · Aug 4, 2020 · US
Melting apparatus for the production of steel
US-2020164433-A1 · May 28, 2020 · US
Control method and apparatus for inhibiting slag entrapment in ladle in last stage of pouring during continuous casting
US-2019291176-A1 · Sep 26, 2019 · US
Rotary hearth furnace
US-10294535-B2 · May 21, 2019 · US
Plasma furnace having lateral discharge gates
US-2018363982-A1 · Dec 20, 2018 · US
Molten metal scrap submergence apparatus
US-2018245847-A1 · Aug 30, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F27B3/19?
- CPC F27B3/19 is the Cooperative Patent Classification code for “Arrangements of devices for discharging.”
- How many patents are filed under CPC F27B3/19 (Arrangements of devices for discharging)?
- Our database includes 45 publications tagged with this CPC code.
- Is patent activity under CPC F27B3/19 growing?
- Publication counts under this code: 1 in 2023 vs 1 in 2025 (latest complete years).