Steel-sheet non-plating defect prediction method, steel-sheet defect reduction method, hot-dip galvanized steel sheet manufacturing method, and steel-sheet non-plating defect prediction model generation method
US-12595543-B2 · Apr 7, 2026 · US
Furnaces in which the charge is moving up or down (for wire, strip C21D9/54)
Furnaces in which the charge is moving up or down (for wire, strip C21D9/54) · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C21D9/005 |
| Official title | {Furnaces in which the charge is moving up or down (for wire, strip C21D9/54)} |
| Display label | Furnaces in which the charge is moving up or down (for wire, strip C21D9/54) |
| Total patents | 39 |
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 | 7 |
| 2017 | 4 |
| 2018 | 3 |
| 2020 | 2 |
| 2022 | 3 |
| 2023 | 3 |
| 2024 | 5 |
| 2025 | 6 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Jet-type direct-fired preheating system
US-2026085374-A1 · Mar 26, 2026 · US
Continuous annealing line, continuous hot-dip galvanizing line, and steel sheet production method
US-12571068-B2 · Mar 10, 2026 · US
Method for heating steel sheet, method for producing coated steel sheet, direct fired furnace, and continuous hot-dip galvanizing facility
US-2025388989-A1 · Dec 25, 2025 · US
High-speed jet and radiation combined heating device and rapid heating method thereof
US-2025388991-A1 · Dec 25, 2025 · US
Induction heating method and induction heating apparatus for ring-shaped member, manufacturing method for ring-shaped member, manufacturing method for bearing, manufacturing method for vehicle, and manufacturing method for mechanical device
US-2025271034-A1 · Aug 28, 2025 · US
Continuous annealing line, continuous hot-dip galvanizing line, and method of producing steel sheet
US-2025171872-A1 · May 29, 2025 · US
Heat treatment method and heat treatment furnace
US-12305248-B2 · May 20, 2025 · US
Method of producing high-strength hot-dip galvanized steel sheet
US-12276006-B2 · Apr 15, 2025 · US
Continuous annealing line, continuous hot-dip galvanizing line, and steel sheet production method
US-2024425959-A1 · Dec 26, 2024 · US
Heat treatment method and heat treatment furnace
US-2024392402-A1 · Nov 28, 2024 · US
Steel-sheet non-plating defect prediction method, steel-sheet defect reduction method, hot-dip galvanized steel sheet manufacturing method, and steel-sheet non-plating defect prediction model generation method
US-2024254612-A1 · Aug 1, 2024 · US
Dew point control method for continuous annealing furnace, continuous annealing method for steel sheet, steel sheet manufacturing method, continuous annealing furnace, continuous hot-dip galvanizing line, and galvannealing line
US-2024229186-A1 · Jul 11, 2024 · US
Continuous annealing equipment, continuous annealing method, method of producing cold-rolled steel sheets and method of producing coated or plated steel sheets
US-2024158885-A1 · May 16, 2024 · US
Continuous annealing line, continuous hot-dip galvanizing line, and steel sheet production method
US-2023265539-A1 · Aug 24, 2023 · US
Continuous hot dip galvanizing apparatus
US-11649520-B2 · May 16, 2023 · US
Method of producing high-strength hot-dip galvanized steel sheet
US-2023082367-A1 · Mar 16, 2023 · US
Continuous hot dip galvanizing apparatus
US-2022403480-A1 · Dec 22, 2022 · US
Method for producing galvannealed steel sheet, and continuous hot dip galvanizing apparatus
US-11459631-B2 · Oct 4, 2022 · US
Heat treatment method and heat treatment furnace
US-2022136077-A1 · May 5, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C21D9/005?
- CPC C21D9/005 is the Cooperative Patent Classification code for “Furnaces in which the charge is moving up or down (for wire, strip C21D9/54).”
- How many patents are filed under CPC C21D9/005 (Furnaces in which the charge is moving up or down (for wire, strip C21D9/54))?
- Our database includes 39 publications tagged with this CPC code.
- Is patent activity under CPC C21D9/005 growing?
- Publication counts under this code: 5 in 2024 vs 6 in 2025 (latest complete years).