Hydrogen release and storage system, hydrogen release and storage method, ammonia production apparatus, gas turbine, fuel cell, and steel mill
US-12503362-B2 · Dec 23, 2025 · US
by reforming
by reforming · 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 | C21B2100/22 |
| Official title | by reforming |
| Display label | by reforming |
| Total patents | 67 |
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 | 2 |
| 2016 | 5 |
| 2017 | 3 |
| 2018 | 3 |
| 2019 | 1 |
| 2020 | 2 |
| 2021 | 3 |
| 2022 | 6 |
| 2023 | 13 |
| 2024 | 8 |
| 2025 | 14 |
| 2026 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
System and method for producing steel
US-12503735-B2 · Dec 23, 2025 · US
Hot metal production from DRI with electric arc heating
US-12497668-B2 · Dec 16, 2025 · US
Method for producing reduced iron
US-12486548-B2 · Dec 2, 2025 · US
Biomass processing integrated with reduction of metal ores, systems for these processes, and products made therefrom
US-2025340960-A1 · Nov 6, 2025 · US
Iron production with synthesis gas feed and carbon capture
US-2025297334-A1 · Sep 25, 2025 · US
Method for the direct reduction of iron ore
US-2025257416-A1 · Aug 14, 2025 · US
Method of operating blast furnace and blast furnace ancillary facility
US-12365953-B2 · Jul 22, 2025 · US
Method for producing molten pig iron
US-2025179594-A1 · Jun 5, 2025 · US
Modular direct reduction systems and associated methods
US-12319975-B2 · Jun 3, 2025 · US
Method of reducing iron ore powder
US-2025163525-A1 · May 22, 2025 · US
Method for manufacturing carbonaceous material-containing agglomerate ore, and method for manufacturing molten pig iron
US-2025137080-A1 · May 1, 2025 · US
Process and apparatus for direct reduction with electrically heated-up reduction gas
US-12209293-B2 · Jan 28, 2025 · US
Steelmaking method and associated network of plants
US-2025019782-A1 · Jan 16, 2025 · US
Direct reduced iron system and method
US-2024401160-A1 · Dec 5, 2024 · US
Method for operating a metallurgical plant for producing iron products
US-2024360526-A1 · Oct 31, 2024 · US
Agglomerated ore and method for producing same
US-2024318279-A1 · Sep 26, 2024 · US
Direct reduced iron system and method
US-12060622-B2 · Aug 13, 2024 · US
Operating method of a network of plants
US-2024263259-A1 · Aug 8, 2024 · US
Method for operating a blast furnace installation
US-2024263258-A1 · Aug 8, 2024 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C21B2100/22?
- CPC C21B2100/22 is the Cooperative Patent Classification code for “by reforming.”
- How many patents are filed under CPC C21B2100/22 (by reforming)?
- Our database includes 67 publications tagged with this CPC code.
- Is patent activity under CPC C21B2100/22 growing?
- Publication counts under this code: 8 in 2024 vs 14 in 2025 (latest complete years).