B21D 15/00
Corrugating tubes
Official title: Corrugating tubes (wrinkle-bending using mandrels or the like B21D9/14)
B21D15/00 (Corrugating tubes) appears on 274 US grants and 194 published applications in this corpus.
Search patents in B21D- Granted patents
- 274
- Published applications
- 194
- Assignees
- 199
- Inventors
- 527
- Latest grant
- 7 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 9 | 0 |
| 1978 | 2 | 0 |
| 1979 | 6 | 0 |
| 1980 | 5 | 0 |
| 1981 | 5 | 0 |
| 1982 | 7 | 0 |
| 1983 | 3 | 0 |
| 1984 | 5 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 5 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 9 | 0 |
| 1999 | 4 | 0 |
| 2000 | 4 | 0 |
| 2001 | 9 | 4 |
| 2002 | 11 | 8 |
| 2003 | 7 | 9 |
| 2004 | 4 | 5 |
| 2005 | 7 | 4 |
| 2006 | 7 | 8 |
| 2007 | 1 | 6 |
| 2008 | 4 | 8 |
| 2009 | 4 | 6 |
| 2010 | 4 | 8 |
| 2011 | 3 | 7 |
| 2012 | 5 | 8 |
| 2013 | 4 | 7 |
| 2014 | 7 | 8 |
| 2015 | 13 | 11 |
| 2016 | 4 | 10 |
| 2017 | 9 | 11 |
| 2018 | 9 | 8 |
| 2019 | 6 | 7 |
| 2020 | 10 | 15 |
| 2021 | 11 | 9 |
| 2022 | 13 | 12 |
| 2023 | 9 | 6 |
| 2024 | 7 | 4 |
| 2025 | 6 | 4 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Conformable cold plate for fluid cooling applications7 Apr 2026US 12,598,725 B2Intel Corporation
- Method of creating a plurality of longitudinally separated circumferential dents in a wellbore tubular30 Dec 2025US 12,509,953 B2Shell USA, Inc.
- Crimping device26 Aug 2025US 12,397,337 B2Winton Machine Company
- Metal bellows for downhole use18 Mar 2025US 12,253,175 B2Tco AS
- Ball screw device, machine component manufacturing method, machine manufacturing method, vehicle manufacturing method, machine component, machine, vehicle, hydraulic forming method, and hydraulic forming die25 Feb 2025US 12,234,894 B2Nsk Ltd.
- Universal connector and tube forming10 Sep 2026US 2026/0263858 A1Systems IP Pty Ltd
- Method of creating a plurality of longitudinally separated circumferential dents in a wellbore tubular5 Jun 2025US 2025/0179891 A1Shell USA, Inc.
- Method of manufacturing a measuring tube of a fluid measuring means22 May 2025US 2025/0162236 A1Amvalor
- Ball screw device, machine component manufacturing method, machine manufacturing method, vehicle manufacturing method, machine component, machine, vehicle, hydraulic forming method, and hydraulic forming die17 Apr 2025US 2025/0122926 A1Nsk Ltd.
- Method for the multi-axis shaping of a hollow workpiece and supporting core for use in the method20 Mar 2025US 2025/0091114 A1Uniflex-Hydraulik GmbH
Most cited
By later US patents
- Deformable member175US 6,896,049 B2Zeroth Technology Ltd. · 2005
- Method and apparatus for forming threads in metal containers117US 5,704,240 AAluminum Company of America · 1998
- Apparatus and method for forming annular grooves on the outer surface of a cable or tube59US 8,465,235 B2Miniflex Limited · 2013
- Tube expander utilizing hydraulically actuated pistons44US 4,006,619 A1977
- Cans formed of thin-walled material and apparatus for forming precise fine beads therein43US 4,538,439 ACantec, Inc. · 1985