E21B 15/04
Supports for the drilling machine: specially adapted for directional drilling
Official title: specially adapted for directional drilling, e.g. slant hole rigs
E21B15/04 (Supports for the drilling machine: specially adapted for directional drilling) appears on 182 US grants and 158 published applications in this corpus.
Search patents in E21B- Granted patents
- 182
- Published applications
- 158
- Assignees
- 96
- Inventors
- 379
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 5 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 4 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 1 |
| 2003 | 2 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 7 |
| 2007 | 1 | 1 |
| 2008 | 4 | 6 |
| 2009 | 4 | 4 |
| 2010 | 4 | 4 |
| 2011 | 5 | 9 |
| 2012 | 3 | 4 |
| 2013 | 5 | 8 |
| 2014 | 6 | 5 |
| 2015 | 5 | 4 |
| 2016 | 6 | 4 |
| 2017 | 6 | 5 |
| 2018 | 6 | 14 |
| 2019 | 5 | 15 |
| 2020 | 15 | 16 |
| 2021 | 10 | 12 |
| 2022 | 11 | 6 |
| 2023 | 7 | 10 |
| 2024 | 10 | 10 |
| 2025 | 9 | 6 |
| 2026 | 7 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Construction machine and method for carrying out a construction work step8 Sep 2026US 12,729,586 B1Klemm Bohrtechnik GmbH
- System for detecting an entity in the vicinity of a drilling machine, and corresponding method25 Aug 2026US 12,715,740 B2Mbi Produits De Forage Inc.
- Mobility control for mobile drilling rig26 May 2026US 12,637,909 B2Caterpillar Inc.
- System for remotely operated subsurface measurements28 Apr 2026US 12,612,752 B2Fnv IP B.V.
- Drilling rig power supply bus management28 Apr 2026US 12,614,910 B2Rouse Industries Inc.
- Drill rod loader for drilling machines24 Sep 2026US 2026/0286792 A1Comacchio S.R.L.
- Construction machine and method for carrying out a construction work step10 Sep 2026US 2026/0266136 A1Klemm Bohrtechnik GmbH
- Hdd machine with lowered driveline5 Mar 2026US 2026/0063001 A1Vermeer Manufacturing Company
- Mobile rig to well securement system and method26 Feb 2026US 2026/0055670 A1
- Mobile rig to well alignment system and method26 Feb 2026US 2026/0055671 A1
Most cited
By later US patents
- Multi-purpose mobile drill rig93US 4,371,041 ADrill Systems, Inc. · 1983
- Lift through plug container for slant rig61US 5,050,673 AHalliburton Company · 1991
- Drilling rig55US 5,794,723 ABoart Longyear Company · 1998
- Power screwdriver having rotary input control53US 8,418,778 B2Black & Decker Inc. · 2013
- Drill rod handling device42US 6,634,443 B1Boart Longyear Pty. Ltd. · 2003