C21B 2005/005
Selection or treatment of the reducing gases
Official title: {Selection or treatment of the reducing gases}
C21B2005/005 (Selection or treatment of the reducing gases) appears on 17 US grants and 46 published applications in this corpus.
Search patents in C21B- Granted patents
- 17
- Published applications
- 46
- Assignees
- 32
- Inventors
- 123
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2015 | 0 | 1 |
| 2016 | 0 | 1 |
| 2017 | 1 | 3 |
| 2018 | 0 | 2 |
| 2019 | 4 | 1 |
| 2020 | 1 | 0 |
| 2021 | 1 | 1 |
| 2022 | 1 | 12 |
| 2023 | 0 | 6 |
| 2024 | 2 | 7 |
| 2025 | 2 | 9 |
| 2026 | 5 | 3 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Blast furnace—converter steel production method based on carbon cycling28 Jul 2026US 12,692,561 B2Cisdi Engineering Co., Ltd
- Biomass pyrolysis integrated with bio-reduction of metal ores, hydrogen production, and/or activated-carbon production9 Jun 2026US 12,649,959 B2Carbon Technology Holdings, LLC
- Hydrogen-rich blast furnace ironmaking system based on mass-energy conversion, and production control method therefor5 May 2026US 12,618,119 B2Changli County Xingguo Precision Machine Parts Co., Ltd.
- Steelmaking line and method of producing reduced iron27 Jan 2026US 12,534,770 B2Jfe Steel Corporation
- Solid carbon production device and solid carbon production method20 Jan 2026US 12,528,701 B2Mitsubishi Heavy Industries, Ltd.
- Carbon dioxide capture, carbon resource utilization, and hydrogen production system for steel mill2 Jul 2026US 2026/0183700 A1Lowcarbon Co., Ltd.
- Method for operating a smelting furnace installation28 May 2026US 2026/0146300 A1Paul Wurth S. A.
- Blast Furnace - Converter Steel Production Method Based on Carbon Cycling12 Feb 2026US 2026/0043097 A1Cisdi Engineering Co., Ltd
- Hydrogen-rich blast furnace ironmaking system based onmass-energy conversion, and production control method therefor14 Aug 2025US 2025/0257415 A1Changli County Xingguo Precision Machine Parts Co., Ltd.
- Reduction of a metal oxide-containing material on the basis of ammonia nh326 Jun 2025US 2025/0207211 A1Primetals Technologies Austria GmbH
Most cited
By later US patents
- Blast furnace and method for operating a blast furnace1US 10,287,643 B2CCP Technology GmbH · 2019
- Method for blowing substitute reducing agents into a blast furnace1US 10,472,689 B2Küttner Holding GmbH & Co. KG · 2019
- System and method for reducing ore using hydrogen as a reducing agent1US 12,043,874 B2Ohmium International, Inc. · 2024