B21B 45/00
Devices for surface or other treatment of work, specially combined with or
Official title: Devices for surface {or other} treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills (B21B15/00, {B21B1/227 and B21B27/005} take precedence; technical features of scaling-off devices B21C43/00)
B21B45/00 (Devices for surface or other treatment of work, specially combined with or) appears on 1,263 US grants and 861 published applications in this corpus.
Search patents in B21B- Granted patents
- 1,263
- Published applications
- 861
- Assignees
- 507
- Inventors
- 2,824
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 21 | 0 |
| 1977 | 17 | 0 |
| 1978 | 14 | 0 |
| 1979 | 9 | 0 |
| 1980 | 21 | 0 |
| 1981 | 12 | 0 |
| 1982 | 11 | 0 |
| 1983 | 16 | 0 |
| 1984 | 21 | 0 |
| 1985 | 18 | 0 |
| 1986 | 23 | 0 |
| 1987 | 22 | 0 |
| 1988 | 20 | 0 |
| 1989 | 18 | 0 |
| 1990 | 22 | 0 |
| 1991 | 20 | 0 |
| 1992 | 16 | 0 |
| 1993 | 24 | 0 |
| 1994 | 19 | 0 |
| 1995 | 37 | 0 |
| 1996 | 31 | 0 |
| 1997 | 42 | 0 |
| 1998 | 47 | 0 |
| 1999 | 41 | 0 |
| 2000 | 36 | 0 |
| 2001 | 36 | 13 |
| 2002 | 30 | 18 |
| 2003 | 23 | 20 |
| 2004 | 18 | 36 |
| 2005 | 17 | 28 |
| 2006 | 24 | 21 |
| 2007 | 16 | 29 |
| 2008 | 11 | 36 |
| 2009 | 15 | 37 |
| 2010 | 20 | 42 |
| 2011 | 34 | 36 |
| 2012 | 24 | 40 |
| 2013 | 35 | 31 |
| 2014 | 18 | 36 |
| 2015 | 24 | 52 |
| 2016 | 32 | 52 |
| 2017 | 35 | 25 |
| 2018 | 26 | 32 |
| 2019 | 38 | 44 |
| 2020 | 27 | 46 |
| 2021 | 36 | 40 |
| 2022 | 32 | 39 |
| 2023 | 36 | 24 |
| 2024 | 27 | 43 |
| 2025 | 33 | 23 |
| 2026 | 18 | 18 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B21B 45/02Devices for surface or other treatment of work, specially combined with or780
- B21B 45/004Heating the product327
- B21B 45/04Devices for surface or other treatment of work, specially combined with or250
- B21B 45/008Heat shields47
- B21B 45/002Increasing friction between work and working rolls by using friction increasing substance3
Recent patents
- Sub-ambient temperature transfer system for cold forming processes22 Sep 2026US 12,741,304 B2GM Global Technology Operations LLC
- Method of descaling heavy gage sheet metal coils and heavy gage individual sheets of sheet metal22 Sep 2026US 12,741,306 B2Lloyds Engineering Works Limited
- Apparatus for removing foreign matter on hot-rolled steel strip18 Aug 2026US 12,708,931 B2Posco
- Wiping apparatus and rolling facility21 Jul 2026US 12,686,044 B2Primetals Technologies Japan, Ltd.
- Method and equipment for cooling on a reversing hot rolling mill26 May 2026US 12,636,691 B2Constellium Muscle Shoals LLC
- Method of making thick aluminum alloy products8 Oct 2026US 2026/0308740 A1Arconic Technologies LLC
- Multiple-billet hot rolling plant with joint cooling system1 Oct 2026US 2026/0295647 A1Pomini Long Rolling Mills S.R.I.
- Squeezing roller having an internal drive for a cold rolling system10 Sep 2026US 2026/0264127 A1Primetals Technologies Austria GmbH
- Method and equipment for cooling on a reversing hot rolling mill3 Sep 2026US 2026/0257262 A1Constellium Muscle Shoals LLC
- Short-flow rolling device and method for seamless pipe27 Aug 2026US 2026/0249337 A1Changzhou Institute of Technology
Most cited
By later US patents
- High-capacity wire rolling mill195US 5,946,783 ASMS Schloemann-Siemag Aktiengesellschaft · 1999
- Method for reducing thickness of a titanium foil or thin strip element91US 5,226,989 ATexas Instruments Incorporated · 1993
- Isothermal metal forming apparatus89US 3,988,913 AInternational Harvester Company · 1976
- Method for reducing thickness of a high-strength low-ductility metal foil on thin strip element89US 5,222,282 ATexas Instruments Incorporated · 1993
- Apparatus for and method of processing billets in a rolling mill69US 6,233,994 B1Morgan Construction Company · 2001