F27D 3/15
Tapping equipment
Official title: Tapping equipment; Equipment for removing {or retaining} slag
F27D3/15 (Tapping equipment) appears on 388 US grants and 236 published applications in this corpus.
Search patents in F27D- Granted patents
- 388
- Published applications
- 236
- Assignees
- 258
- Inventors
- 882
- Latest grant
- 7 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 6 | 0 |
| 1978 | 8 | 0 |
| 1979 | 3 | 0 |
| 1980 | 6 | 0 |
| 1981 | 6 | 0 |
| 1982 | 2 | 0 |
| 1983 | 10 | 0 |
| 1984 | 12 | 0 |
| 1985 | 6 | 0 |
| 1986 | 11 | 0 |
| 1987 | 11 | 0 |
| 1988 | 6 | 0 |
| 1989 | 9 | 0 |
| 1990 | 10 | 0 |
| 1991 | 6 | 0 |
| 1992 | 5 | 0 |
| 1993 | 4 | 0 |
| 1994 | 9 | 0 |
| 1995 | 9 | 0 |
| 1996 | 8 | 0 |
| 1997 | 13 | 0 |
| 1998 | 10 | 0 |
| 1999 | 12 | 0 |
| 2000 | 9 | 0 |
| 2001 | 11 | 7 |
| 2002 | 12 | 15 |
| 2003 | 16 | 16 |
| 2004 | 15 | 12 |
| 2005 | 2 | 2 |
| 2006 | 1 | 11 |
| 2007 | 3 | 14 |
| 2008 | 3 | 12 |
| 2009 | 14 | 9 |
| 2010 | 6 | 8 |
| 2011 | 8 | 12 |
| 2012 | 8 | 8 |
| 2013 | 7 | 5 |
| 2014 | 7 | 8 |
| 2015 | 4 | 8 |
| 2016 | 6 | 15 |
| 2017 | 9 | 6 |
| 2018 | 9 | 9 |
| 2019 | 6 | 9 |
| 2020 | 7 | 14 |
| 2021 | 8 | 5 |
| 2022 | 10 | 8 |
| 2023 | 7 | 9 |
| 2024 | 10 | 5 |
| 2025 | 2 | 5 |
| 2026 | 1 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Oxygen lance guiding assembly7 Apr 2026US 12,595,964 B2Tmt Tapping-Measuring-Technology Sarl
- Manipulator arm, and manipulator comprising a manipulator arm25 Nov 2025US 12,480,712 B2Tmt Tapping-Measuring-Technology Sarl
- Furnace, fluid feed component, fluid reforming system and method of reforming a fluid15 Jul 2025US 12,359,872 B2Burnstar Technologies (Pty) Ltd
- Tap hole plug gun31 Dec 2024US 12,181,222 B2Tmt Tapping-Measuring-Technology Sarl
- Device and method for filling a tap hole of an electric arc furnace with refractory filling material26 Nov 2024US 12,152,283 B2Badische Stahl-Engineering GmbH
- Shaft furnace for the smelting of copper and method therefor20 Aug 2026US 2026/0242893 A1SMS group GmbH
- Flash smelting furnace, flash smelting furnace operation method, and metal smelting method13 Aug 2026US 2026/0234750 A1JX Advanced Metals Corporation
- Melting furnace13 Aug 2026US 2026/0235363 A1Kubota Corporation
- A method for manufacturing pig iron in an electrical smelting furnace and associated electrical smelting furnace12 Feb 2026US 2026/0043100 A1
- Refractory plate, method for the production of the refractory plate, use of the refractory plate, slide gate valve for controlling a flow of molten metal and vessel for containing molten metal13 Nov 2025US 2025/0345847 A1Refractory Intellectual Property GmbH & Co.KG
Most cited
By later US patents
- Method for producing hydrocarbon gas from waste126US 5,395,405 AMolten Metal Technology, Inc. · 1995
- Method and apparatus for injection of a liquid waste into a molten bath124US 5,436,210 AMolten Metal Technology, Inc. · 1995
- Feed processing employing dispersed molten droplets114US 5,744,117 AMolten Metal Technology, Inc. · 1998
- Monolithic jet column reactor pump113US 5,863,314 AAlphatech, Inc. · 1999
- Method and system for injection of a vaporizable material into a molten bath112US 5,679,132 AMolten Metal Technology, Inc. · 1997