B22D 41/20
Stopper-rod operating equipment
B22D41/20 (Stopper-rod operating equipment) appears on 31 US grants and 13 published applications in this corpus.
Search patents in B22D- Granted patents
- 31
- Published applications
- 13
- Assignees
- 29
- Inventors
- 76
- Latest grant
- 13 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 1 |
| 2013 | 0 | 0 |
| 2014 | 2 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 0 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 1 | 1 |
| 2025 | 0 | 1 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Drip prevention device for pressurized pouring furnace13 Jan 2026US 12,521,788 B2Tpr Co., Ltd.
- Drive device for a stopper for a metallurgical vessel5 Mar 2024US 11,919,069 B2Refractory Intellectual Property GmbH & Co.KG
- Pouring metallic plug stick clamping mechanism for cast steel wheels9 Apr 2019US 10,252,330 B2Amsted Rail Company, Inc.
- Stopper control device17 Jul 2018US 10,024,455 B2Danieli & C. Officine Meccaniche SpA
- Arrangement for controlling the flow out of a tundish29 Apr 2014US 8,708,204 B2Swerea Mefos AB
- Ridged tundish stopper14 May 2026US 2026/0131375 A1Vesuvius Group S. A.
- Ridged tundish stopper23 Apr 2026US 2026/0108940 A1Vesuvius Group S. A.
- Stopper rod and method for inducing a rotational flow of a molten metal1 Jan 2026US 2026/0001123 A1Refractory Intellectual Property GmbH & Co.KG
- Control device for a metallurgical vessel stopper-rod11 Sep 2025US 2025/0281974 A1Vesuvius-Sert, SAS
- Drip prevention device for pressurized pouring furnace12 Sep 2024US 2024/0300009 A1Tpr Co., Ltd.
Most cited
By later US patents
- Molten metal distribution launder13US 5,316,071 AWagstaff, Inc. · 1994
- Stopper rod spatial control mechanism9US 4,953,761 AInductotherm Corp. · 1990
- Outlet and flow control device for metallurgical vessels8US 5,083,689 AArva AG · 1992
- Device for controlling an inflow of metal by means of a stopper7US 5,674,426 AConcast Standard AG · 1997
- Apparatus for controlled adjustment of a stopper of a distributor channel or the like in a continous casting plant6US 5,118,084 AZimmermann & Jansen GmbH · 1992