F27B 3/225
Oxygen blowing
Official title: {Oxygen blowing}
F27B3/225 (Oxygen blowing) appears on 119 US grants and 77 published applications in this corpus.
Search patents in F27B- Granted patents
- 119
- Published applications
- 77
- Assignees
- 77
- Inventors
- 276
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 9 | 0 |
| 1998 | 11 | 0 |
| 1999 | 11 | 0 |
| 2000 | 7 | 0 |
| 2001 | 7 | 3 |
| 2002 | 8 | 3 |
| 2003 | 5 | 4 |
| 2004 | 9 | 5 |
| 2005 | 3 | 3 |
| 2006 | 0 | 4 |
| 2007 | 2 | 2 |
| 2008 | 2 | 1 |
| 2009 | 2 | 7 |
| 2010 | 4 | 4 |
| 2011 | 1 | 3 |
| 2012 | 4 | 4 |
| 2013 | 4 | 6 |
| 2014 | 1 | 3 |
| 2015 | 1 | 2 |
| 2016 | 5 | 5 |
| 2017 | 1 | 1 |
| 2018 | 4 | 1 |
| 2019 | 0 | 0 |
| 2020 | 0 | 2 |
| 2021 | 1 | 7 |
| 2022 | 1 | 0 |
| 2023 | 3 | 3 |
| 2024 | 2 | 2 |
| 2025 | 1 | 0 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for simultaneously injecting a fuel gas and an oxygen-rich gas into a unit14 Apr 2026US 12,601,022 B2SMS group GmbH
- Thermal energy recovery systems for non-contact temperature detection of molten steel in steelmaking process23 Dec 2025US 12,503,736 B1Central South University
- Coaxial dual supersonic speed oxygen flow coherent oxygen lance20 Aug 2024US 12,065,708 B2Cisdi Engineering Co., Ltd
- Direct smelting process with full combustion25 Jun 2024US 12,018,340 B2Tata Steel Nederland Technology B.V.
- Device for maintaining a tap hole of an electric arc furnace26 Dec 2023US 11,852,414 B2Badische Stahl-Engineering GmbH
- Molten steel manufacturing method and arc furnace20 Aug 2026US 2026/0242884 A1Nippon Steel Corporation
- Method of smelting steel and method of producing steel30 Apr 2026US 2026/0117332 A1Jfe Steel Corporation
- Melting system, and process for melting aluminum scrap20 Jun 2024US 2024/0200872 A1Constellium Neuf-Brisach
- Refining method of molten iron and manufacturing method of molten steel using same29 Feb 2024US 2024/0068060 A1Jfe Steel Corporation
- Method for treating molten metals and/or slags in metallurgical baths and metallurgical plant for treating molten metals28 Dec 2023US 2023/0416868 A1SMS group GmbH
Most cited
By later US patents
- Method and apparatus for injection of a liquid waste into a molten bath124US 5,436,210 AMolten Metal Technology, Inc. · 1995
- Method and apparatus for producing a product in a regenerator furnace from impure waste containing a non-gasifiable impurity110US 5,640,709 AMolten Metal Technology, Inc. · 1997
- Method and apparatus for producing a product in a regenerator furnace from impure waste containing a non-gasifiable impurity108US 5,640,706 AMolten Metal Technology, Inc. · 1997
- Method of producing metals and metal alloys78US 6,267,799 B1Technological Resources Pty. Limited · 2001
- Use of high carbon coal ash72US 6,755,905 B2Lafarge Canada Inc. · 2004