B21D 41/021
By means of tube-flaring hand tools
Official title: {by means of tube-flaring hand tools}
B21D41/021 (By means of tube-flaring hand tools) appears on 89 US grants and 92 published applications in this corpus.
Search patents in B21D- Granted patents
- 89
- Published applications
- 92
- Assignees
- 55
- Inventors
- 155
- Latest grant
- 31 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 3 |
| 2005 | 3 | 3 |
| 2006 | 2 | 5 |
| 2007 | 0 | 2 |
| 2008 | 3 | 2 |
| 2009 | 1 | 0 |
| 2010 | 2 | 2 |
| 2011 | 0 | 4 |
| 2012 | 1 | 4 |
| 2013 | 0 | 6 |
| 2014 | 6 | 6 |
| 2015 | 5 | 4 |
| 2016 | 7 | 6 |
| 2017 | 5 | 4 |
| 2018 | 9 | 9 |
| 2019 | 3 | 4 |
| 2020 | 6 | 4 |
| 2021 | 5 | 4 |
| 2022 | 2 | 4 |
| 2023 | 5 | 5 |
| 2024 | 4 | 1 |
| 2025 | 3 | 6 |
| 2026 | 2 | 3 |
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.
- Process and tools to perform reactor pressure vessel nozzle expansion mitigating primary coolant leakage10 Mar 2026US 12,573,513 B2GE-Hitachi Nuclear Energy Americas LLC
- Baffle plate for a pipe expander12 Aug 2025US D1,088,072 S1NAVAC Inc. · Design
- PEX tubing expander head10 Jun 2025US 12,325,176 B2Brochman Innovations, LLC
- Electric pipe expander4 Feb 2025US 12,214,402 B2NAVAC Inc.
- Ac electric pipe extension tool23 Jul 2026US 2026/0208256 A1Changzhou Canty Electric Industry Co., Ltd
- Flare forming device and flare forming tool2 Jul 2026US 2026/0183821 A1Makita Corporation
- Clamping device and flare forming tool2 Jul 2026US 2026/0183822 A1Makita Corporation
- Flaring device and flaring tool2 Oct 2025US 2025/0303461 A1Makita Corporation
- Pex tubing expander head4 Sep 2025US 2025/0276485 A1Brochman Innovations, LLC
Most cited
By later US patents
- Cold rolling positioning roller assembly57US 5,778,715 AGrinnell Corporation · 1998
- Pipe element having shoulder, groove and bead and methods and apparatus for manufacture thereof31US 8,777,277 B2Victaulic Company · 2014
- Motor driven flaring device23US 5,090,226 AInoac Corporation · 1992
- Tool and method for expanding a pipe end17US 9,248,617 B2Uponor Innovation AB · 2016
- Pneumaticaly driven pipe swedging and flaring tools14US 7,578,161 B12009