B21B 19/00
Tube-rolling by rollers arranged outside the work and having their axes not
Official title: Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work (straightening by rollers B21D)
B21B19/00 (Tube-rolling by rollers arranged outside the work and having their axes not) appears on 219 US grants and 166 published applications in this corpus.
Search patents in B21B- Granted patents
- 219
- Published applications
- 166
- Assignees
- 71
- Inventors
- 403
- Latest grant
- 5 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 7 | 0 |
| 1984 | 6 | 0 |
| 1985 | 3 | 0 |
| 1986 | 7 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 7 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 7 | 0 |
| 1998 | 3 | 0 |
| 1999 | 6 | 0 |
| 2000 | 4 | 0 |
| 2001 | 3 | 0 |
| 2002 | 2 | 3 |
| 2003 | 2 | 0 |
| 2004 | 1 | 5 |
| 2005 | 4 | 2 |
| 2006 | 3 | 4 |
| 2007 | 3 | 6 |
| 2008 | 1 | 4 |
| 2009 | 4 | 13 |
| 2010 | 3 | 11 |
| 2011 | 7 | 7 |
| 2012 | 5 | 4 |
| 2013 | 8 | 13 |
| 2014 | 4 | 6 |
| 2015 | 4 | 22 |
| 2016 | 14 | 7 |
| 2017 | 10 | 11 |
| 2018 | 6 | 7 |
| 2019 | 7 | 2 |
| 2020 | 5 | 9 |
| 2021 | 8 | 4 |
| 2022 | 11 | 13 |
| 2023 | 5 | 7 |
| 2024 | 5 | 3 |
| 2025 | 9 | 1 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Anti-collapse oil casing with high strength and manufacturing method therefor5 May 2026US 12,617,007 B2Baoshan Iron & Steel Co., Ltd.
- Method for preparing stainless steel seamless tube with ultra-high cleanliness for integrated circuit and IC industry preparation device, and stainless steel seamless tube14 Apr 2026US 12,601,026 B2Shengtak New Materials Co., Ltd
- Rolling mill stand with variable lateral guide device23 Dec 2025US 12,502,700 B2SMS group GmbH
- Cross-rolling unit and method for setting the roll pass of a cross-rolling unit9 Dec 2025US 12,491,549 B2SMS group GmbH
- Steel pipe for fuel injection pipe, and fuel injection pipe using same4 Nov 2025US 12,460,275 B2Nippon Steel Corporation
- Short-flow rolling device and method for seamless pipe27 Aug 2026US 2026/0249337 A1Changzhou Institute of Technology
- Device for production of magnesium alloy seamless tube27 Aug 2026US 2026/0249338 A1Taiyuan University of Science and Technology
- Magnesium alloy molded article and molding device thereof27 Feb 2025US 2025/0065390 A1Massive Lab Inc.
- Rolling mill stand with variable lateral guide device12 Dec 2024US 2024/0408658 A1SMS group GmbH
- Seamless steel tube resistant to carbon dioxide corrosion and manufacturing method therefor25 Jul 2024US 2024/0247350 A1Baoshan Iron & Steel Co., Ltd.
Most cited
By later US patents
- Process for producing high-strength seamless steel pipe having excellent sulfide stress cracking resistance24US 5,938,865 ASumitomo Metal Industries, Ltc. · 1999
- Smoothing rolling mill21US 4,175,414 AVallourec (Usines a Tubes de Lorraine-Escaut et Vallourec Reunies) · 1979
- Method of piercing in seamless tube manufacturing15US 4,470,282 ASumitomo Kinzoku Kogyo Kabushiki Gaisha · 1984
- Electrical control arrangement for a rolling mill drive motor of a rolling mill15US 4,578,626 ASiemens Aktiengesellschaft · 1986
- Methods and apparatus for manufacturing seamless tube14US 4,928,507 AKocks Technik GmbH & Co. · 1990