B21B 21/00
Pilgrim-step tube-rolling , i.e. pilger mills
Official title: Pilgrim-step tube-rolling {, i.e. pilger mills}
B21B21/00 (Pilgrim-step tube-rolling , i.e. pilger mills) appears on 129 US grants and 56 published applications in this corpus.
Search patents in B21B- Granted patents
- 129
- Published applications
- 56
- Assignees
- 50
- Inventors
- 214
- Latest grant
- 15 Oct 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 6 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 5 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 8 | 0 |
| 1988 | 1 | 0 |
| 1989 | 5 | 0 |
| 1990 | 2 | 0 |
| 1991 | 7 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 6 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 2 | 3 |
| 2003 | 0 | 1 |
| 2004 | 1 | 2 |
| 2005 | 0 | 0 |
| 2006 | 2 | 2 |
| 2007 | 3 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 4 |
| 2010 | 0 | 1 |
| 2011 | 2 | 4 |
| 2012 | 5 | 5 |
| 2013 | 1 | 6 |
| 2014 | 1 | 0 |
| 2015 | 2 | 6 |
| 2016 | 6 | 5 |
| 2017 | 7 | 2 |
| 2018 | 2 | 2 |
| 2019 | 4 | 4 |
| 2020 | 1 | 4 |
| 2021 | 6 | 0 |
| 2022 | 1 | 2 |
| 2023 | 0 | 0 |
| 2024 | 1 | 1 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Method and device for producing a rod-shaped element15 Oct 2024US 12,115,570 B2Alleima GmbH
- Roll stand27 Dec 2022US 11,534,827 B2SMS group GmbH
- Methods for creating a zinc-metal oxide layer in metal components for corrosion resistance5 Oct 2021US 11,136,660 B2Electric Power Research Institute, Inc.
- Steel-vanadium alloy cladding for fuel element28 Sep 2021US 11,133,114 B2TerraPower, LLC
- Cold-pilger rolling mill29 Jun 2021US 11,045,848 B2Sandvik Materials Technology Deutschland GmbH
- Shaving system17 Jul 2025US 2025/0229445 A1Wenzhou Meibo Technology Co., Ltd.
- High pressure tube and method of manufacturing the same21 Mar 2024US 2024/0093809 A1Alleima GmbH
- Method and device for producing a rod-shaped element21 Apr 2022US 2022/0118494 A1Sandvik Materials Technology Deutschland GmbH
- Steel-vanadium alloy cladding for fuel element14 Apr 2022US 2022/0115150 A1TerraPower, LLC
- Roll stand10 Dec 2020US 2020/0384540 A1SMS group GmbH
Most cited
By later US patents
- Process for forming seamless tubing of zirconium or titanium alloys from welded precursors52US 4,690,716 AWestinghouse Electric Corp. · 1987
- Hydraulic shock absorber25US 4,044,865 AAB Mecman · 1977
- Durable method for producing finned tubing25US 5,016,460 AInco Alloys International, Inc. · 1991
- Apparatus and method for automated inspection of a surface contour on a workpiece25US 5,097,602 AWestinghouse Electric Corp. · 1992
- Method and apparatus for producing zircaloy tubes and zircaloy tubes thus produced20US 4,233,834 ASandvik Special Metal Corporation · 1980