B21D 39/08
Tube expanders
B21D39/08 (Tube expanders) appears on 461 US grants and 321 published applications in this corpus.
Search patents in B21D- Granted patents
- 461
- Published applications
- 321
- Assignees
- 239
- Inventors
- 737
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 7 | 0 |
| 1978 | 5 | 0 |
| 1979 | 7 | 0 |
| 1980 | 13 | 0 |
| 1981 | 4 | 0 |
| 1982 | 8 | 0 |
| 1983 | 12 | 0 |
| 1984 | 7 | 0 |
| 1985 | 10 | 0 |
| 1986 | 9 | 0 |
| 1987 | 12 | 0 |
| 1988 | 19 | 0 |
| 1989 | 13 | 0 |
| 1990 | 7 | 0 |
| 1991 | 10 | 0 |
| 1992 | 4 | 0 |
| 1993 | 7 | 0 |
| 1994 | 2 | 0 |
| 1995 | 6 | 0 |
| 1996 | 6 | 0 |
| 1997 | 6 | 0 |
| 1998 | 7 | 0 |
| 1999 | 6 | 0 |
| 2000 | 5 | 0 |
| 2001 | 5 | 2 |
| 2002 | 9 | 10 |
| 2003 | 8 | 12 |
| 2004 | 8 | 16 |
| 2005 | 8 | 19 |
| 2006 | 14 | 4 |
| 2007 | 16 | 14 |
| 2008 | 10 | 13 |
| 2009 | 5 | 13 |
| 2010 | 7 | 8 |
| 2011 | 14 | 10 |
| 2012 | 8 | 9 |
| 2013 | 9 | 15 |
| 2014 | 5 | 12 |
| 2015 | 11 | 13 |
| 2016 | 10 | 14 |
| 2017 | 15 | 6 |
| 2018 | 5 | 21 |
| 2019 | 12 | 15 |
| 2020 | 9 | 17 |
| 2021 | 18 | 17 |
| 2022 | 18 | 14 |
| 2023 | 12 | 13 |
| 2024 | 9 | 13 |
| 2025 | 11 | 14 |
| 2026 | 5 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Expandable devices28 Jul 2026US 12,691,489 B2The Foundry, LLC
- Machine for deformation machining of a tube and/or of a component on the tube30 Jun 2026US 12,667,882 B2OP S.r.l.
- Electric pipe expander31 Mar 2026US 12,589,425 B2NAVAC Inc.
- Pipe expanding tool17 Mar 2026US 12,576,441 B2Makita Corporation
- Joining method, and device for such13 Jan 2026US 12,521,782 B2Mahle International GmbH
- Flexible object expansion device control system and flexible object expansion device17 Sep 2026US 2026/0273608 A1Honda Motor Co., Ltd.
- Pipe expander30 Jul 2026US 2026/0216780 A1Emerson Professional Tools (Shanghai) Co., Ltd.
- Producing a Body Element21 May 2026US 2026/0138454 A1Bayerische Motoren Werke Aktiengesellschaft
- Intermittent rotation structure for extension tool, and extension tool7 May 2026US 2026/0124665 A1Changzhou Canty Electric Industry Co., Ltd
- Compression collar expander assembly and method of use12 Mar 2026US 2026/0070114 A1Life Technologies Corporation
Most cited
By later US patents
- Procedures and equipment for profiling and jointing of pipes319US 6,457,532 B1Weatherford/Lamb, Inc. · 2002
- Method and apparatus for downhole sealing252US 6,425,444 B1Weatherford/Lamb, Inc. · 2002
- Method and apparatus for drilling and lining a wellbore236US 6,543,552 B1Weatherford/Lamb, Inc. · 2003
- Deformable member175US 6,896,049 B2Zeroth Technology Ltd. · 2005
- Apparatus and method for isolating a section of tubing171US 6,527,049 B2Weatherford/Lamb, Inc. · 2003