B21D 41/00
Application of procedures in order to alter the diameter of tube ends
Official title: Application of procedures in order to alter the diameter of tube ends (B21D39/00 takes precedence {; plastic tubes B29C57/08})
B21D41/00 (Application of procedures in order to alter the diameter of tube ends) appears on 612 US grants and 527 published applications in this corpus.
Search patents in B21D- Granted patents
- 612
- Published applications
- 527
- Assignees
- 437
- Inventors
- 1,227
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 13 | 0 |
| 1978 | 10 | 0 |
| 1979 | 7 | 0 |
| 1980 | 11 | 0 |
| 1981 | 6 | 0 |
| 1982 | 4 | 0 |
| 1983 | 3 | 0 |
| 1984 | 8 | 0 |
| 1985 | 8 | 0 |
| 1986 | 13 | 0 |
| 1987 | 3 | 0 |
| 1988 | 13 | 0 |
| 1989 | 5 | 0 |
| 1990 | 5 | 0 |
| 1991 | 5 | 0 |
| 1992 | 7 | 0 |
| 1993 | 6 | 0 |
| 1994 | 7 | 0 |
| 1995 | 5 | 0 |
| 1996 | 7 | 0 |
| 1997 | 3 | 0 |
| 1998 | 6 | 0 |
| 1999 | 9 | 0 |
| 2000 | 8 | 0 |
| 2001 | 14 | 4 |
| 2002 | 10 | 10 |
| 2003 | 9 | 10 |
| 2004 | 12 | 24 |
| 2005 | 14 | 14 |
| 2006 | 15 | 12 |
| 2007 | 11 | 15 |
| 2008 | 8 | 19 |
| 2009 | 5 | 23 |
| 2010 | 13 | 17 |
| 2011 | 12 | 19 |
| 2012 | 19 | 25 |
| 2013 | 14 | 26 |
| 2014 | 17 | 21 |
| 2015 | 19 | 28 |
| 2016 | 27 | 24 |
| 2017 | 29 | 23 |
| 2018 | 26 | 36 |
| 2019 | 21 | 27 |
| 2020 | 30 | 22 |
| 2021 | 22 | 23 |
| 2022 | 20 | 27 |
| 2023 | 25 | 22 |
| 2024 | 17 | 18 |
| 2025 | 16 | 22 |
| 2026 | 7 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for production of a steel tubular product, in particular an airbag tubular product, and a steel tubular product produced using this method, in particular an airbag tubular product11 Aug 2026US 12,703,021 B2Benteler Steel/Tube GmbH
- Apparatus for mechanical machining by plastic deformation or for assembling a pair of components, and relative machine tool comprising such an apparatus12 May 2026US 12,623,271 B2GNUTTI TRANSFER S.p.A.
- Electric pipe expander31 Mar 2026US 12,589,425 B2NAVAC Inc.
- Transfer machine31 Mar 2026US 12,589,461 B2Grazioli Cesare S.r.l.
- Apparatus for the orbital cutting and calibration of tubes17 Mar 2026US 12,576,438 B2Blm S.P.A.
- Tube expansion tool1 Oct 2026US 2026/0295652 A1Makita Corporation
- Pex expansion tool17 Sep 2026US 2026/0273609 A1Milwaukee Electric Tool Corporation
- Universal connector and tube forming10 Sep 2026US 2026/0263858 A1Systems IP Pty Ltd
- Pipe expander30 Jul 2026US 2026/0216780 A1Emerson Professional Tools (Shanghai) Co., Ltd.
- Ac electric pipe extension tool23 Jul 2026US 2026/0208256 A1Changzhou Canty Electric Industry Co., Ltd
Most cited
By later US patents
- System and method for crimping a prosthetic valve192US 8,652,145 B2Edwards Lifesciences Corporation · 2014
- Device for expanding pipes176US 5,014,779 A1991
- Apparatus and method to expand casing104US 6,622,797 B2Hydril Company · 2003
- Method and apparatus for tube expansion86US 4,934,038 ACaterpillar Inc. · 1990
- Method and apparatus for expanding tubular members75US 4,530,231 AAPX Group, Inc. · 1985