Method of producing grain-oriented electrical steel sheet
US-2024249863-A1 · Jul 25, 2024 · US
Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material · 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 | C21D1/74 |
| Official title | Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material |
| Display label | Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material |
| Total patents | 582 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 28 |
| 2016 | 52 |
| 2017 | 40 |
| 2018 | 49 |
| 2019 | 45 |
| 2020 | 45 |
| 2021 | 44 |
| 2022 | 60 |
| 2023 | 57 |
| 2024 | 81 |
| 2025 | 67 |
| 2026 | 14 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Continuous annealer for wire
US-2024093327-A1 · Mar 21, 2024 · US
Hot-dip galvanized steel sheet and hot-dip galvannealed steel sheet having improved hole expansion ratio, and manufacturing methods thereof
US-2016340755-A1 · Nov 24, 2016 · US
Continuous annealing device and continuous hot-dip galvanising device for steel strip
US-9499875-B2 · Nov 22, 2016 · US
Method of surface-treating metal component
US-9489978-B2 · Nov 8, 2016 · US
Method for producing high-strength galvannealed steel sheets
US-2016304982-A1 · Oct 20, 2016 · US
Bake- hardening galvanized steel sheet
US-2016298207-A1 · Oct 13, 2016 · US
Continuous annealing furnace for annealing steel strip, method for continuously annealing steel strip, continous hot-dip galvanizing facility, and method for manufacturing hot-dip galvanized steel strip
US-2016290721-A1 · Oct 6, 2016 · US
Metal ring and manufacturing method for metal ring
US-2016290437-A1 · Oct 6, 2016 · US
Continuous annealing system and continuous annealing method
US-2016265079-A1 · Sep 15, 2016 · US
Soft magnetic core having excellent high-current DC bias characteristics and core loss characteristics and method of manufacturing same
US-9443652-B2 · Sep 13, 2016 · US
Hot-dip galvanized steel sheets and galvannealed steel sheets that have good appearance and adhesion to coating and methods for producing the same (as amended)
US-2016230259-A1 · Aug 11, 2016 · US
Hot-dip galvanized steel sheets and galvannealed steel sheets that have good appearance and adhesion to coating and methods for producing the same (as amended)
US-2016222500-A1 · Aug 4, 2016 · US
Method for producing a steel component provided with a metallic coating providing protection against corosion
US-2016215360-A1 · Jul 28, 2016 · US
High-strength galvanized steel sheet and method of manufacturing the same
US-2016214351-A1 · Jul 28, 2016 · 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-9388484-B2 · Jul 12, 2016 · US
Process for producing an iron-tin layer on a packaging steel substrate
US-9382636-B2 · Jul 5, 2016 · US
Heat treatment apparatus for cylinder block and heat treatment method for cylinder block
US-2016186279-A1 · Jun 30, 2016 · US
Ni-base superalloy and manufacturing method thereof
US-2016177424-A1 · Jun 23, 2016 · US
High-strength plated steel sheet having superior plating properties, workability, and delayed fracture resistance, and method for producing same
US-2016160335-A1 · Jun 9, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C21D1/74?
- CPC C21D1/74 is the Cooperative Patent Classification code for “Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material.”
- How many patents are filed under CPC C21D1/74 (Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material)?
- Our database includes 582 publications tagged with this CPC code.
- Is patent activity under CPC C21D1/74 growing?
- Publication counts under this code: 81 in 2024 vs 67 in 2025 (latest complete years).