B23D 21/00
Machines or devices for shearing or cutting tubes
Official title: Machines or devices for shearing or cutting tubes (as additional equipment for deep-drawing presses B21D24/16)
B23D21/00 (Machines or devices for shearing or cutting tubes) appears on 757 US grants and 447 published applications in this corpus.
Search patents in B23D- Granted patents
- 757
- Published applications
- 447
- Assignees
- 374
- Inventors
- 1,137
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 18 | 0 |
| 1977 | 12 | 0 |
| 1978 | 13 | 0 |
| 1979 | 10 | 0 |
| 1980 | 11 | 0 |
| 1981 | 14 | 0 |
| 1982 | 12 | 0 |
| 1983 | 13 | 0 |
| 1984 | 20 | 0 |
| 1985 | 12 | 0 |
| 1986 | 24 | 0 |
| 1987 | 17 | 0 |
| 1988 | 16 | 0 |
| 1989 | 17 | 0 |
| 1990 | 19 | 0 |
| 1991 | 18 | 0 |
| 1992 | 14 | 0 |
| 1993 | 19 | 0 |
| 1994 | 12 | 0 |
| 1995 | 14 | 0 |
| 1996 | 15 | 0 |
| 1997 | 14 | 0 |
| 1998 | 15 | 0 |
| 1999 | 28 | 0 |
| 2000 | 17 | 0 |
| 2001 | 17 | 4 |
| 2002 | 15 | 14 |
| 2003 | 23 | 16 |
| 2004 | 15 | 11 |
| 2005 | 5 | 17 |
| 2006 | 11 | 12 |
| 2007 | 4 | 16 |
| 2008 | 9 | 20 |
| 2009 | 9 | 16 |
| 2010 | 13 | 21 |
| 2011 | 11 | 17 |
| 2012 | 12 | 19 |
| 2013 | 7 | 21 |
| 2014 | 13 | 27 |
| 2015 | 11 | 20 |
| 2016 | 21 | 20 |
| 2017 | 22 | 22 |
| 2018 | 25 | 22 |
| 2019 | 19 | 20 |
| 2020 | 22 | 17 |
| 2021 | 10 | 19 |
| 2022 | 8 | 21 |
| 2023 | 18 | 14 |
| 2024 | 11 | 14 |
| 2025 | 19 | 14 |
| 2026 | 13 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B23D 21/06Hand-operated tube-cutters247
- B23D 21/04Tube-severing machines with rotating tool-carrier166
- B23D 21/14Cutting inside the tube134
- B23D 21/02Otherwise than in a plane perpendicular to the axis of the tube89
- B23D 21/006And sealing, crushing or chamfering the tubes36
- B23D 21/003Machines or devices for shearing or cutting tubes: by tools working in5
Recent patents
- Fluid-tight separating closure29 Sep 2026US 12,746,610 B2Sartorius Stedim North America Inc.
- Pipe cutter with replaceable blade and blade storage22 Sep 2026US 12,741,327 B2JS Products, Inc.
- Tube cutter for cutting a round tube and method for cutting a round tube to length25 Aug 2026US 12,715,058 B2Conex IPR Limited
- End-processing center for rod-shaped workpieces28 Jul 2026US 12,691,513 B2ASMAG-Holding GmbH
- Pipe cutting device30 Jun 2026US 12,667,990 B2
- Pipe Cutting Machine8 Oct 2026US 2026/0307160 A1Wuyi Zhuanzhuan Industry and Trade Co., Ltd.
- Tools for cutting tubular members17 Sep 2026US 2026/0273716 A1Black & Decker Inc.
- Tube cutter capable for cutting tubes with various diameters10 Sep 2026US 2026/0264154 A1Yung Chi Industry Co., Ltd.
- Device for shaping a tubular object27 Aug 2026US 2026/0249367 A1Numalliance
- Pipe splitter and method6 Aug 2026US 2026/0225166 A1TT Technologies, Inc.
Most cited
By later US patents
- Cutting/expanding tool92US 5,306,101 AThe Brooklyn Union Gas Company · 1994
- Low-clearance pipe lathe82US 4,939,964 A1990
- Method of cutting apertures in lining in underground pipes68US 4,577,388 AInsituform Intl Inc · 1986
- Pipe end preparation and cutoff tool62US 4,418,591 ATri Tool Inc. · 1983
- Pipe machining apparatus61US 5,054,342 AThe E. H. Wachs Company · 1991