B23D 21/02
Otherwise than in a plane perpendicular to the axis of the tube
Official title: otherwise than in a plane perpendicular to the axis of the tube, e.g. for making mitred cuts, for making bicycle frames
B23D21/02 (Otherwise than in a plane perpendicular to the axis of the tube) appears on 89 US grants and 51 published applications in this corpus.
Search patents in B23D- Granted patents
- 89
- Published applications
- 51
- Assignees
- 49
- Inventors
- 123
- Latest grant
- 16 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 5 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 5 | 1 |
| 2002 | 3 | 2 |
| 2003 | 3 | 4 |
| 2004 | 3 | 2 |
| 2005 | 0 | 4 |
| 2006 | 1 | 1 |
| 2007 | 1 | 1 |
| 2008 | 1 | 3 |
| 2009 | 1 | 1 |
| 2010 | 2 | 2 |
| 2011 | 1 | 3 |
| 2012 | 2 | 1 |
| 2013 | 2 | 4 |
| 2014 | 2 | 2 |
| 2015 | 1 | 3 |
| 2016 | 3 | 1 |
| 2017 | 3 | 2 |
| 2018 | 3 | 1 |
| 2019 | 0 | 1 |
| 2020 | 2 | 2 |
| 2021 | 1 | 2 |
| 2022 | 1 | 3 |
| 2023 | 2 | 2 |
| 2024 | 3 | 0 |
| 2025 | 2 | 1 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Pipe slitter16 Dec 2025US 12,496,645 B1The Charles Machines Works, Inc.
- Longitudinal pipe cutting tool27 May 2025US 12,311,452 B2Citizens Energy Management Company, LLC
- Pipe splitting apparatus with replaceable blade19 Nov 2024US 12,146,600 B2TT Technologies, Inc.
- Portable automated notching machine14 May 2024US 11,980,954 B1ABG Design LLC
- Hot bolt clamp27 Feb 2024US 11,913,572 B2Team Industrial Services, Inc.
- Pipe splitter and method6 Aug 2026US 2026/0225166 A1TT Technologies, Inc.
- Pipe slitter9 Apr 2026US 2026/0097440 A1The Charles Machine Works, Inc.
- Pipe splitting apparatus with replaceable blade30 Jan 2025US 2025/0035249 A1TT Technologies, Inc.
- Longitudinal pipe cutting tool12 Oct 2023US 2023/0321736 A1Citizens Energy Management Company, LLC
- Tube processing systems5 Jan 2023US 2023/0001465 A1Rogue Fabrication, LLC
Most cited
By later US patents
- Cutting/expanding tool92US 5,306,101 AThe Brooklyn Union Gas Company · 1994
- Method of cutting apertures in lining in underground pipes68US 4,577,388 AInsituform Intl Inc · 1986
- Device and method for trenchless replacement of underground pipe60US 6,305,880 B1WRB Company, Inc. · 2001
- Pipe cutting device54US 3,942,248 ADND Corporation · 1976
- Cutting/expanding tool35US 5,098,225 AThe Brooklyn Union Gas Company · 1992