E21B 3/03
With an intermittent unidirectional rotation of the tool
Official title: with an intermittent unidirectional rotation of the tool
E21B3/03 (With an intermittent unidirectional rotation of the tool) appears on 15 US grants and 11 published applications in this corpus.
Search patents in E21B- Granted patents
- 15
- Published applications
- 11
- Assignees
- 7
- Inventors
- 20
- Latest grant
- 5 Mar 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 2 |
| 2006 | 0 | 0 |
| 2007 | 2 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 3 |
| 2018 | 0 | 1 |
| 2019 | 2 | 0 |
| 2020 | 3 | 1 |
| 2021 | 3 | 2 |
| 2022 | 2 | 1 |
| 2023 | 0 | 0 |
| 2024 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
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- Tool coupler with sliding coupling members for top drive28 Sep 2021US 11,131,151 B2Weatherford Technology Holdings, LLC
- Tool coupler with sliding coupling members for top drive17 Feb 2022US 2022/0049557 A1Weatherford Technology Holdings, LLC
- Induced drilling method for inertia constrained implicated motion and inertial constraint induced drilling device18 Mar 2021US 2021/0079728 A1Xi'an Manyuan Electromechanical Equipment Co.Ltd.
- Cutting device with tapered cutting element4 Feb 2021US 2021/0032989 A1Joy Global Underground Mining LLC
- Cutting head having segmented cutting disc9 Jul 2020US 2020/0217198 A1Joy Global Underground Mining LLC
- Tool coupler with sliding coupling members for top drive6 Sep 2018US 2018/0252050 A1Weatherford Technology Holdings, LLC
Most cited
By later US patents
- Earth drilling device18US 4,719,978 AIng. Gunter Klemm Spezialunternehmen fur Bohrtechnik · 1988
- Ratchet operated device for setting a post having an auger attached at one end8US 5,170,850 A1992
- Drilling apparatus and method for introducing a drilling element into the soil8US 7,228,920 B2BAUER Maschinen GmbH · 2007
- Cutting device with tapered cutting element2US 10,808,531 B2Joy Global Underground Mining LLC · 2020
- Drilling apparatus for producing a cased bore and method for operating a drilling apparatus1US 10,344,586 B2BAUER Maschinen GmbH · 2019