B23D 21/14
Cutting inside the tube
Official title: cutting inside the tube
B23D21/14 (Cutting inside the tube) appears on 134 US grants and 70 published applications in this corpus.
Search patents in B23D- Granted patents
- 134
- Published applications
- 70
- Assignees
- 78
- Inventors
- 197
- Latest grant
- 16 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 4 | 0 |
| 1978 | 1 | 0 |
| 1979 | 4 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 8 | 0 |
| 1985 | 2 | 0 |
| 1986 | 7 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 5 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 2 | 2 |
| 2003 | 3 | 2 |
| 2004 | 3 | 5 |
| 2005 | 1 | 1 |
| 2006 | 2 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 4 |
| 2009 | 3 | 2 |
| 2010 | 3 | 4 |
| 2011 | 0 | 3 |
| 2012 | 3 | 5 |
| 2013 | 2 | 4 |
| 2014 | 1 | 4 |
| 2015 | 3 | 3 |
| 2016 | 5 | 4 |
| 2017 | 5 | 3 |
| 2018 | 2 | 1 |
| 2019 | 1 | 3 |
| 2020 | 4 | 4 |
| 2021 | 4 | 6 |
| 2022 | 1 | 2 |
| 2023 | 4 | 2 |
| 2024 | 3 | 1 |
| 2025 | 6 | 3 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Pipe slitter16 Dec 2025US 12,496,645 B1The Charles Machines Works, Inc.
- Pipe cutting tool7 Oct 2025US 12,435,589 B1Proshale LLC
- Pipe cutting tool12 Aug 2025US 12,383,968 B1Proshale LLC
- Ultra-high pressure cutting devices, uses and methods thereof29 Jul 2025US 12,370,612 B2NuWave Industries Inc.
- Method and apparatus for installing geothermal heat exchanger3 Jun 2025US 12,320,554 B2Geosource Energy Inc.
- Pipe slitter9 Apr 2026US 2026/0097440 A1The Charles Machine Works, Inc.
- Ultra-high pressure cutting devices, uses and methods thereof30 Oct 2025US 2025/0332647 A1NuWave Industries Inc.
- Method and apparatus for installing geothermal heat exchanger28 Aug 2025US 2025/0271178 A1Geosource Energy Inc.
- Pipe splitting apparatus with replaceable blade30 Jan 2025US 2025/0035249 A1TT Technologies, Inc.
- Trimming device and method for rectangular container, and rectangular container3 Oct 2024US 2024/0326141 A1Aida Engineering, Ltd.
Most cited
By later US patents
- Cutting tool and method for cutting tubular member55US 6,564,868 B1Cudd Pressure Control, Inc. · 2003
- Internal pipe cutting tool51US 3,977,076 AOne Michigan Avenue Corporation · 1976
- Can trimming apparatus40US 4,030,432 AGulf & Western Manufacturing Company (Hastings) · 1977
- Apparatus for cutting hollow pipe31US 4,706,481 ASpiro America Inc. · 1987
- Cutting system, device, and method for splitting pipes25US 7,172,370 B2TRACTO-TECHNIK GmbH & Co. KG · 2007