Method of producing molten iron using electric furnace including video device
US-12566029-B2 · Mar 3, 2026 · US
Preheating scrap
Preheating scrap · 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 | F27D13/002 |
| Official title | {Preheating scrap} |
| Display label | Preheating scrap |
| Total patents | 43 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 4 |
| 2017 | 6 |
| 2018 | 6 |
| 2019 | 3 |
| 2020 | 4 |
| 2021 | 3 |
| 2022 | 2 |
| 2023 | 2 |
| 2024 | 4 |
| 2025 | 3 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Cement clinker production system and cement clinker production method
US-12515985-B2 · Jan 6, 2026 · US
Method for producing molten iron using electric furnace
US-2025188553-A1 · Jun 12, 2025 · US
Stack melting apparatus
US-2025180292-A1 · Jun 5, 2025 · US
Method of producing molten iron
US-2025003684-A1 · Jan 2, 2025 · US
Scrap dryer and/or scrap preheater
US-12050060-B2 · Jul 30, 2024 · US
Method of producing molten iron using electric furnace including video device
US-2024085110-A1 · Mar 14, 2024 · US
Method for producing molten iron using electric furnace
US-2024035102-A1 · Feb 1, 2024 · US
Apparatus and method for feeding and preheating a metal charge in a melting furnace
US-11867462-B2 · Jan 9, 2024 · US
Cement clinker production system and cement clinker production method
US-2023365464-A1 · Nov 16, 2023 · US
Scrap dryer and/or scrap preheater
US-2023030899-A1 · Feb 2, 2023 · US
Method of recycling heat
US-11441844-B2 · Sep 13, 2022 · US
Apparatus and method for feeding and preheating a metal charge in a melting furnace
US-2022099373-A1 · Mar 31, 2022 · US
Oxy-fuel combustion system and method for melting a pelleted charge material
US-11060792-B2 · Jul 13, 2021 · US
Method and system for determining the mass of feedstock on a conveyor
US-10935318-B2 · Mar 2, 2021 · US
Method of recycling heat
US-2021055053-A1 · Feb 25, 2021 · US
Method for melting metal material in a melting plant and relative melting plant
US-10801083-B2 · Oct 13, 2020 · US
On-line aluminum scrap remelting device and process
US-2020131601-A1 · Apr 30, 2020 · US
Apparatus to move and preheat metal material
US-10584394-B2 · Mar 10, 2020 · US
Apparatus for heating and transferring metal materials for a melting plant, and method for melting metal materials
US-10571194-B2 · Feb 25, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F27D13/002?
- CPC F27D13/002 is the Cooperative Patent Classification code for “Preheating scrap.”
- How many patents are filed under CPC F27D13/002 (Preheating scrap)?
- Our database includes 43 publications tagged with this CPC code.
- Is patent activity under CPC F27D13/002 growing?
- Publication counts under this code: 4 in 2024 vs 3 in 2025 (latest complete years).