E21B 7/146
Thermal lances
Official title: {Thermal lances}
E21B7/146 (Thermal lances) appears on 33 US grants and 14 published applications in this corpus.
Search patents in E21B- Granted patents
- 33
- Published applications
- 14
- Assignees
- 27
- Inventors
- 59
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 2 |
| 2005 | 0 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 1 |
| 2018 | 1 | 0 |
| 2019 | 1 | 1 |
| 2020 | 0 | 1 |
| 2021 | 2 | 2 |
| 2022 | 2 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Mass flow for non-contact boring18 Aug 2026US 12,709,944 B2Phoenix Boring, Inc.
- Exothermic cutting rod with ignition window23 Aug 2022US 11,420,295 B2Broco, Inc.
- Thermal apparatus and associated methods12 Apr 2022US 11,299,949 B2Clearwell Technology Ltd
- Tunnel boring system5 Oct 2021US 11,136,886 B1EarthGrid PBC
- Method and arrangement for removing a liner below surface16 Feb 2021US 10,920,518 B2Callidus Capital B.V.
- Downhole fluid separation for drilling a well in a hot subterranean zone30 Apr 2026US 2026/0117609 A1Eavor Technologies Inc.
- Mass Flow For Non-Contact Boring16 Oct 2025US 2025/0320782 A1Phoenix Boring, Inc.
- Delay Ignitor Cap, Blowback Ignitor Cap, and Combination Ignitor Cap for a Thermal Lance and Thermal Lances Including Such Ignitor Caps6 Mar 2025US 2025/0075279 A1Reuning-McKim, Inc.
- Devices and processes for igniting oxygen thermal lances or melting lances17 Oct 2024US 2024/0344698 A1BM GROUP HOLDING S.p.A.
- Thermal apparatus and associated methods21 Oct 2021US 2021/0324697 A1Clearwell Technology Ltd
Most cited
By later US patents