C21D 3/06
Extraction of hydrogen
C21D3/06 (Extraction of hydrogen) appears on 45 US grants and 54 published applications in this corpus.
Search patents in C21D- Granted patents
- 45
- Published applications
- 54
- Assignees
- 39
- Inventors
- 130
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 2 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 2 | 0 |
| 2015 | 0 | 2 |
| 2016 | 1 | 4 |
| 2017 | 1 | 7 |
| 2018 | 3 | 3 |
| 2019 | 4 | 1 |
| 2020 | 4 | 1 |
| 2021 | 2 | 2 |
| 2022 | 1 | 3 |
| 2023 | 0 | 7 |
| 2024 | 1 | 7 |
| 2025 | 6 | 5 |
| 2026 | 5 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Dehydrogenation method for steel material and steel product, and production method for steel material and steel product21 Jul 2026US 12,686,896 B2Jfe Steel Corporation
- Steel sheet, member, and method for producing them12 May 2026US 12,624,410 B2Jfe Steel Corporation
- Clad steel plate, member, and production methods for same28 Apr 2026US 12,612,673 B2Jfe Steel Corporation
- Continuous annealing line, continuous hot-dip galvanizing line, and steel sheet production method10 Mar 2026US 12,571,068 B2Jfe Steel Corporation
- High-strength galvanized steel sheet and method for manufacturing the same20 Jan 2026US 12,529,131 B2Jfe Steel Corporation
- Steel material for high-strength line pipe with high fracture toughness in hydrogen and method for producing the same, and steel pipe for high-strength line pipe and method for producing the same23 Apr 2026US 2026/0110065 A1Jfe Steel Corporation
- Method for manufacturing high-chromium (cr) molten steel, method for manufacturing cast piece, and method for manufacturing press roll16 Apr 2026US 2026/0103769 A1Posco
- Steel material with good fatigue property in hydrogen and method for producing the same, and steel pipe and method for producing the same9 Apr 2026US 2026/0098329 A1Jfe Steel Corporation
- Austenitic stainless steel26 Feb 2026US 2026/0055494 A1Nippon Steel Stainless Steel Corporation
- Hot-stamped component having high cold-bending performance and high strength, and manufacturing method therefor3 Jul 2025US 2025/0215519 A1Baoshan Iron & Steel Co., Ltd.
Most cited
By later US patents
- Method of baking treatment of steel product parts37US 6,855,217 B2Aoyama Seisakusho Co., Ltd. · 2005
- Process for case-hardening rolling bearing elements of low-alloy nickeliferous steel14US 4,913,749 ASKF GmbH · 1990
- Method of producing non-oriented magnetic steel plate having high magnetic flux density12US 5,062,905 ANippon Steel Corporation · 1991
- Process for avoiding surface oxidation in the carburization of steels9US 5,498,299 AMesser Griesheim GmbH · 1996
- Process for manufacturing welding wire8US 5,821,500 ANippon Steel Welding Products & Engineering Co., Ltd. · 1998