B21B 19/04
Rolling basic material of solid, i.e. non-hollow, structure
Official title: Rolling basic material of solid, i.e. non-hollow, structure; Piercing {, e.g. rotary piercing mills}
B21B19/04 (Rolling basic material of solid, i.e. non-hollow, structure) appears on 130 US grants and 128 published applications in this corpus.
Search patents in B21B- Granted patents
- 130
- Published applications
- 128
- Assignees
- 38
- Inventors
- 249
- Latest grant
- 5 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 2 |
| 2006 | 3 | 3 |
| 2007 | 3 | 6 |
| 2008 | 1 | 4 |
| 2009 | 3 | 13 |
| 2010 | 3 | 10 |
| 2011 | 7 | 4 |
| 2012 | 5 | 2 |
| 2013 | 7 | 10 |
| 2014 | 3 | 5 |
| 2015 | 2 | 19 |
| 2016 | 11 | 6 |
| 2017 | 8 | 8 |
| 2018 | 6 | 6 |
| 2019 | 4 | 2 |
| 2020 | 4 | 7 |
| 2021 | 4 | 3 |
| 2022 | 9 | 7 |
| 2023 | 3 | 7 |
| 2024 | 5 | 1 |
| 2025 | 4 | 0 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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
- Steel pipe for fuel injection pipe, and fuel injection pipe using same4 Nov 2025US 12,460,275 B2Nippon Steel Corporation
- Seamless steel pipe and method of manufacture thereof24 Jun 2025US 12,338,942 B2Jfe Steel Corporation
- Steel pipe for fuel injection pipe, and fuel injection pipe using same20 May 2025US 12,305,597 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
- Seamless steel tube resistant to carbon dioxide corrosion and manufacturing method therefor25 Jul 2024US 2024/0247350 A1Baoshan Iron & Steel Co., Ltd.
- High performance alloy for corrosion resistance26 Oct 2023US 2023/0339006 A1Saudi Arabian Oil Company
- Method for Preparing Stainless Steel Seamless Tube with Ultra-High Cleanliness for Integrated Circuit and IC Industry Preparation Device, and Stainless Steel Seamless Tube28 Sep 2023US 2023/0304118 A1Jiangsu Wujin Stainless Steel Pipe Group 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
- Method of piercing in seamless tube manufacturing15US 4,470,282 ASumitomo Kinzoku Kogyo Kabushiki Gaisha · 1984
- Methods and apparatus for manufacturing seamless tube14US 4,928,507 AKocks Technik GmbH & Co. · 1990
- Method for manufacturing seamless pipe13US 5,778,714 ANKK Corporation · 1998
- Methods of piercing and enlarging elongate metal members such as seamless tubes12US 4,034,588 AColumbiana Foundry Company · 1977