B21D 41/026
By means of mandrels
Official title: {by means of mandrels}
B21D41/026 (By means of mandrels) appears on 132 US grants and 148 published applications in this corpus.
Search patents in B21D- Granted patents
- 132
- Published applications
- 148
- Assignees
- 107
- Inventors
- 280
- Latest grant
- 31 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 2 |
| 2004 | 1 | 1 |
| 2005 | 1 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 1 |
| 2009 | 0 | 4 |
| 2010 | 1 | 2 |
| 2011 | 2 | 4 |
| 2012 | 1 | 3 |
| 2013 | 5 | 9 |
| 2014 | 4 | 7 |
| 2015 | 2 | 8 |
| 2016 | 6 | 5 |
| 2017 | 12 | 10 |
| 2018 | 11 | 15 |
| 2019 | 9 | 13 |
| 2020 | 17 | 10 |
| 2021 | 10 | 9 |
| 2022 | 6 | 11 |
| 2023 | 9 | 10 |
| 2024 | 5 | 6 |
| 2025 | 6 | 10 |
| 2026 | 2 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Electric pipe expander31 Mar 2026US 12,589,425 B2NAVAC Inc.
- Pipe expanding tool17 Mar 2026US 12,576,441 B2Makita Corporation
- Cold expansion pipe fitting, pipe connection, system, equipment, and method21 Oct 2025US 12,449,083 B2Uponor Innovation AB
- Expansion tool19 Aug 2025US 12,390,849 B2Milwaukee Electric Tool Corporation
- Baffle plate for a pipe expander12 Aug 2025US D1,088,072 S1NAVAC Inc. · Design
- Tube expansion tool1 Oct 2026US 2026/0295652 A1Makita Corporation
- Pex expansion tool17 Sep 2026US 2026/0273609 A1Milwaukee Electric Tool Corporation
- Pipe expander30 Jul 2026US 2026/0216780 A1Emerson Professional Tools (Shanghai) Co., Ltd.
- Clamping device and flare forming tool2 Jul 2026US 2026/0183822 A1Makita Corporation
- Tapered cup and method of forming the same7 May 2026US 2026/0124661 A1Ball Corporation
Most cited
By later US patents
- PEX expanding tool38US 8,517,715 B2Milwaukee Electric Tool Corporation · 2013
- Method of making an off-wall spacer cage38US 9,364,284 B2Boston Scientific Scimed, Inc. · 2016
- Tubing expander apparatus36US 4,494,398 AMidas International Corporation · 1985
- Device for enlarging pipe ends32US 4,034,591 ARothenberger AG · 1977
- Snap-in end fitting for pipes31US 5,979,946 ABend All Manufacturing Inc. · 1999