E21B 7/022
Control of the drilling operation
Official title: {Control of the drilling operation; Hydraulic or pneumatic means for activation or operation (control circuits for drilling masts E21B15/045)}
E21B7/022 (Control of the drilling operation) appears on 284 US grants and 258 published applications in this corpus.
Search patents in E21B- Granted patents
- 284
- Published applications
- 258
- Assignees
- 129
- Inventors
- 556
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 5 | 0 |
| 1978 | 7 | 0 |
| 1979 | 2 | 0 |
| 1980 | 5 | 0 |
| 1981 | 6 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 5 | 0 |
| 1985 | 7 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 5 |
| 2005 | 3 | 1 |
| 2006 | 2 | 1 |
| 2007 | 1 | 1 |
| 2008 | 2 | 2 |
| 2009 | 1 | 5 |
| 2010 | 5 | 8 |
| 2011 | 2 | 7 |
| 2012 | 8 | 6 |
| 2013 | 7 | 6 |
| 2014 | 7 | 9 |
| 2015 | 5 | 6 |
| 2016 | 9 | 12 |
| 2017 | 6 | 14 |
| 2018 | 7 | 10 |
| 2019 | 16 | 10 |
| 2020 | 19 | 28 |
| 2021 | 21 | 30 |
| 2022 | 26 | 18 |
| 2023 | 22 | 25 |
| 2024 | 21 | 21 |
| 2025 | 18 | 18 |
| 2026 | 8 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Work tool alignment system for work vehicle21 Jul 2026US 12,687,073 B1Deere & Company
- Compact portable rock drill system23 Jun 2026US 12,662,881 B2Minnich Manufacturing Company, Inc.
- Bolter2 Jun 2026US 12,644,385 B2Joy Global Underground Mining LLC
- Mobility control for mobile drilling rig26 May 2026US 12,637,909 B2Caterpillar Inc.
- Apparatus, rock drilling rig and drilling method5 May 2026US 12,618,290 B2Sandvik Mining and Construction Oy
- Drill with modular electric skid1 Oct 2026US 2026/0298031 A1The Charles Machine Works, Inc.
- Bolter24 Sep 2026US 2026/0286845 A1Joy Global Underground Mining LLC
- Systems and methods for drilling machines13 Aug 2026US 2026/0234994 A1Caterpillar Inc.
- Survey device for determining a position of a mining vehicle23 Jul 2026US 2026/0210710 A1Sandvik Mining and Construction Oy
- Derrick machine with hydraulic control system and fully radial outriggers18 Jun 2026US 2026/0168330 A1Skylift Inc.
Most cited
By later US patents
- Slide out pump stand for hydraulic fracturing equipment239US 10,407,990 B2U.S. Well Services, LLC · 2019
- Parameter monitoring and control for an electric driven hydraulic fracking system192US 10,753,165 B1National Service Alliance—Houston LLC · 2020
- Variable frequency drive configuration for electric driven hydraulic fracking system177US 10,753,153 B1National Service Alliance—Houston LLC · 2020
- Parameter monitoring and control for an electric driven hydraulic fracking system119US 10,871,045 B2National Service Alliance—Houston LLC · 2020
- Adaptive user interface for rock drilling rig77US 7,931,096 B2Sandvik Mining and Construction Oy · 2011