B21B 31/078
Sealing devices
Official title: {Sealing devices (sealings in general F16J15/00)}
B21B31/078 (Sealing devices) appears on 61 US grants and 34 published applications in this corpus.
Search patents in B21B- Granted patents
- 61
- Published applications
- 34
- Assignees
- 30
- Inventors
- 97
- Latest grant
- 10 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 2 |
| 2003 | 3 | 2 |
| 2004 | 4 | 5 |
| 2005 | 3 | 3 |
| 2006 | 0 | 3 |
| 2007 | 0 | 3 |
| 2008 | 2 | 0 |
| 2009 | 3 | 1 |
| 2010 | 1 | 0 |
| 2011 | 1 | 2 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 1 | 0 |
| 2015 | 0 | 1 |
| 2016 | 3 | 2 |
| 2017 | 0 | 1 |
| 2018 | 0 | 1 |
| 2019 | 1 | 1 |
| 2020 | 2 | 0 |
| 2021 | 0 | 2 |
| 2022 | 0 | 0 |
| 2023 | 1 | 1 |
| 2024 | 1 | 1 |
| 2025 | 1 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Seal assembly and roller10 Mar 2026US 12,571,473 B2Andritz Kuesters GmbH
- Roller assembly7 Oct 2025US 12,434,285 B2SMS group GmbH
- Roll stand18 Jun 2024US 12,011,749 B2Primetals Technologies Austria GmbH
- Seal to prevent lubricant escaping, and rolling stand having said seal8 Aug 2023US 11,717,869 B2SMS group GmbH
- Systems and methods for cooling a roll in metal processing27 Oct 2020US 10,814,365 B2Novelis Inc.
- Seal assembly and roller24 Apr 2025US 2025/0129848 A1Andritz Kuesters GmbH
- Press roll apparatus11 Jan 2024US 2024/0011525 A1Prime Planet Energy & Solutions, Inc.
- Roller assembly5 Oct 2023US 2023/0311181 A1SMS group GmbH
- Seal to prevent lubricant escaping, and rolling stand having said seal10 Jun 2021US 2021/0170461 A1SMS group GmbH
- Roll stand20 May 2021US 2021/0146413 A1Primetals Technologies Austria GmbH
Most cited
By later US patents
- Captured rotor seal45US 5,158,304 AInpro Companies, Inc. · 1992
- Sealing mechanism for bearings34US 4,449,717 AMutsubishi Rubber Co., Ltd. · 1984
- Two component bearing seal with bumpers33US 5,129,744 AThe Timken Company · 1992
- Seal arrangement for mill roll23US 4,630,458 ADurametallic Corporation · 1986
- Double jointed coolant seal21US 4,585,236 AMorgan Construction Company · 1986