Continuous annealer for wire
US-2024093327-A1 · Mar 21, 2024 · US
with a controlled atmosphere or vacuum
with a controlled atmosphere or vacuum · 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 | C21D9/561 |
| Official title | {with a controlled atmosphere or vacuum} |
| Display label | with a controlled atmosphere or vacuum |
| Total patents | 206 |
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 | 23 |
| 2016 | 14 |
| 2017 | 22 |
| 2018 | 15 |
| 2019 | 22 |
| 2020 | 24 |
| 2021 | 9 |
| 2022 | 16 |
| 2023 | 20 |
| 2024 | 17 |
| 2025 | 19 |
| 2026 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Ultra-high strength, hot-dip galvanized steel sheet having excellent surface quality and coating adhesion, and method for manufacturing thereof
US-2017369974-A1 · Dec 28, 2017 · US
High strength galvanized steel sheet and method for manufacturing the same
US-9840749-B2 · Dec 12, 2017 · US
Continuous annealing furnace for annealing steel strip, method for continuously annealing steel strip, continuous hot-dip galvanizing facility, and method for manufacturing hot-dip galvanized steel strip
US-9759491-B2 · Sep 12, 2017 · US
Method for producing silicon steel normalizing substrate
US-9738946-B2 · Aug 22, 2017 · US
Method and apparatus for controlling a furnace pressure of a continuous annealing furnace
US-9727061-B2 · Aug 8, 2017 · US
Galvannealed steel sheet and method of manufacturing the same
US-9725795-B2 · Aug 8, 2017 · US
Steel-strip production apparatus
US-2017218476-A1 · Aug 3, 2017 · US
Steel-strip production method, and steel strip
US-2017219288-A1 · Aug 3, 2017 · US
Continuous galvanizing line having an annealing furnace
US-9713823-B2 · Jul 25, 2017 · US
Continuous annealing furnace and continuous annealing method for steel strips
US-9702020-B2 · Jul 11, 2017 · US
Method and device for avoiding surface defects caused by zinc dust in a continuous strip galvanising process
US-9695496-B2 · Jul 4, 2017 · US
Tool arrangement for integration in a production line for producing a hot formed component from a blank, production line with the tool arrangement and method for producing the hot formed component from the blank using the production line
US-2017175222-A1 · Jun 22, 2017 · US
Galvannealed steel sheet and method for producing the same (as amended)
US-2017166989-A1 · Jun 15, 2017 · US
High-strength hot-dip galvanized steel sheet and method for producing same
US-2017166990-A1 · Jun 15, 2017 · US
Method for manufacturing galvanized steel sheet
US-9677148-B2 · Jun 13, 2017 · US
Method of reducing dew point of atmosphere gas in annealing furnace, apparatus for the same and method of producing cold-rolled and annealed steel sheet
US-9657366-B2 · May 23, 2017 · US
Method of producing galvannealed steel sheet
US-2017130296-A1 · May 11, 2017 · US
Method for directly producing pickling-free hot-plated sheet strip product from molten steel
US-2017114427-A1 · Apr 27, 2017 · US
Continuous annealing furnace for steel strip, continuous annealing method, continuous galvanizing apparatus and method for manufacturing galvanized steel strip (as amended)
US-9593401-B2 · Mar 14, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C21D9/561?
- CPC C21D9/561 is the Cooperative Patent Classification code for “with a controlled atmosphere or vacuum.”
- How many patents are filed under CPC C21D9/561 (with a controlled atmosphere or vacuum)?
- Our database includes 206 publications tagged with this CPC code.
- Is patent activity under CPC C21D9/561 growing?
- Publication counts under this code: 17 in 2024 vs 19 in 2025 (latest complete years).