B21B 2045/0227
For tubes
Official title: {for tubes}
B21B2045/0227 (For tubes) appears on 12 US grants and 16 published applications in this corpus.
Search patents in B21B- Granted patents
- 12
- Published applications
- 16
- Assignees
- 10
- Inventors
- 48
- Latest grant
- 21 Nov 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 1 |
| 2004 | 0 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 2 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 1 | 1 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 1 | 3 |
| 2021 | 0 | 2 |
| 2022 | 2 | 0 |
| 2023 | 3 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Apparatus line for manufacturing seamless steel pipe and tube and method of manufacturing duplex seamless stainless steel pipe21 Nov 2023US 11,821,051 B2Jfe Steel Corporation
- Hot and cold composite formed square and rectangular steel tube with thickened corners and production method4 Apr 2023US 11,618,066 B2Sino Institute of Precise Tubes Industry (Guangzhou) Co., Ltd.
- Annular cooling device for large-scale cylindrical shell14 Feb 2023US 11,577,289 B2Yanshan University
- Piercing machine, and method for producing seamless metal pipe using the same29 Nov 2022US 11,511,326 B2Nippon Steel Corporation
- Production method of seamless steel pipe18 Oct 2022US 11,471,923 B2Nippon Steel Corporation
- Threefold rotationally symmetrical stand housing having integrated operating fluid lines20 Nov 2025US 2025/0353056 A1
- Annular Cooling Device for Large-Scale Cylindrical Shell15 Jul 2021US 2021/0213502 A1Yanshan University
- Hot and cold composite formed square and rectangular steel tube with thickened corners and production method20 May 2021US 2021/0146414 A1Sino Research Institute of Roll Forming Industry (Caofeidian) Co., Ltd.
- Production method of seamless steel pipe10 Dec 2020US 2020/0384514 A1Nippon Steel Corporation
- Piercing machine, and method for producing seamless metal pipe using the same3 Sep 2020US 2020/0276625 A1Nippon Steel Corporation
Most cited
By later US patents
- Method of preparing a steel pipe, an apparatus thereof and a steel pipe22US 6,006,789 AKawasaki Steel Corporation · 1999
- Cold-rolling seamless copper tubing4US 6,651,473 B2SMS Meer GmbH · 2003
- Method for manufacturing martensitic stainless steel tube2US 7,485,197 B2Sumitomo Metal Industries, Ltd. · 2009
- Method of and apparatus for producing tubes of metal1US 6,976,377 B2SMS Meer GmbH · 2005
- Method for manufacturing seamless steel tube1US 7,201,812 B2Sumitomo Metal Industries, Ltd. · 2007