F27D 3/1554
For removing the slag from the surface of the melt
Official title: {for removing the slag from the surface of the melt}
F27D3/1554 (For removing the slag from the surface of the melt) appears on 52 US grants and 25 published applications in this corpus.
Search patents in F27D- Granted patents
- 52
- Published applications
- 25
- Assignees
- 44
- Inventors
- 124
- Latest grant
- 15 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 2 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 1 |
| 2009 | 1 | 2 |
| 2010 | 0 | 0 |
| 2011 | 1 | 0 |
| 2012 | 1 | 1 |
| 2013 | 0 | 1 |
| 2014 | 2 | 1 |
| 2015 | 0 | 0 |
| 2016 | 1 | 2 |
| 2017 | 1 | 0 |
| 2018 | 2 | 3 |
| 2019 | 0 | 1 |
| 2020 | 2 | 3 |
| 2021 | 1 | 0 |
| 2022 | 2 | 2 |
| 2023 | 1 | 2 |
| 2024 | 1 | 1 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Furnace, fluid feed component, fluid reforming system and method of reforming a fluid15 Jul 2025US 12,359,872 B2Burnstar Technologies (Pty) Ltd
- Method and installation for removing slag from metallurgical melts12 Mar 2024US 11,926,879 B2RIA Cast House Enginering GmbH
- Slag door for a melting furnace28 Mar 2023US 11,614,283 B2Danieli & C. Officine Meccaniche SpA
- Melting work device and melting work method18 Oct 2022US 11,473,842 B2Sintokogio, Ltd.
- Convertible metallurgical furnace and modular metallurgical plant comprising said furnace for conducting production processes for the production of metals in the molten state, in particular steel or cast iron19 Jul 2022US 11,391,515 B2Tenova Industrial Technologies (Beijing) Co., Ltd.
- Furnace, fluid feed component, fluid reforming system and method of reforming a fluid9 Oct 2025US 2025/0314427 A1Burnstar Technologies (Pty) Ltd
- Method of dross extraction using heated nitrogen and accumulated pressure displacement nozzles25 Jan 2024US 2024/0026510 A1Cleveland-Cliffs Steel Properties Inc.
- Slag door arrangement and cleaning method4 May 2023US 2023/0133535 A1Badische Stahl-Engineering GmbH
- Dross Mitigation Method And Device in A MHD Printer16 Feb 2023US 2023/0051340 A1Xerox Corporation
- Furnace, fluid feed component, fluid reforming system and method of reforming a fluid17 Nov 2022US 2022/0364791 A1Burnstar Technologies (Pty) Ltd
Most cited
By later US patents
- Monolithic jet column reactor pump113US 5,863,314 AAlphatech, Inc. · 1999
- Skim removal16US 4,191,559 AAluminum Company of America · 1980
- Method to protect the anode bottoms in batch DC electric arc furnace steel production10US 6,693,947 B1D. L. Schroeder & Associates · 2004
- Method and apparatus for removing slag8US 3,979,108 AKubota Corporation · 1976
- Mechanical skimmer7US 3,941,360 AChase Brass & Copper Co., Incorporated · 1976