E21B 7/206
Using down-hole drives
Official title: {using down-hole drives}
E21B7/206 (Using down-hole drives) appears on 41 US grants and 16 published applications in this corpus.
Search patents in E21B- Granted patents
- 41
- Published applications
- 16
- Assignees
- 21
- Inventors
- 65
- Latest grant
- 20 May 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 2 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 1 | 0 |
| 2005 | 1 | 2 |
| 2006 | 0 | 0 |
| 2007 | 1 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 2 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 2 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 1 | 1 |
| 2021 | 2 | 1 |
| 2022 | 0 | 2 |
| 2023 | 1 | 0 |
| 2024 | 1 | 1 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Rigless drilling and wellhead installation20 May 2025US 12,305,513 B2Vetco Gray Scandinavia.AS
- Rigless drilling and wellhead installation20 Feb 2024US 11,905,831 B2Vetco Gray Scandinavia.AS
- Arrangement of a ground drilling device, method for operating a ground drilling device and use of an arrangement of a ground drilling device5 Dec 2023US 11,834,921 B2TRACTO-TECHNIK GmbH & Co. KG
- Reversible pneumatic pipe ramming tool23 Feb 2021US 10,927,602 B2The Charles Machine Works, Inc.
- Systems and methods for laying underground fiber optic cable9 Feb 2021US 10,914,052 B1Facebook, Inc.
- Earth Drilling Device16 Oct 2025US 2025/0320780 A1TRACTO-TECHNIK GmbH & Co. KG
- Rigless drilling and wellhead installation2 May 2024US 2024/0141731 A1Vetco Gray Scandinavia AS
- Arrangement of a ground drilling device, method for operating a ground drilling device and use of an arrangement of a ground drilling device4 Aug 2022US 2022/0243533 A1TRACTO-TECHNIK GmbH & Co. KG
- Rigless drilling and wellhead installation23 Jun 2022US 2022/0195805 A1Vetco Gray Scandinavia AS
- Systems and methods for laying underground fiber optic cable28 Jan 2021US 2021/0025128 A1Facebook, Inc.
Most cited
By later US patents
- Ram boring machine with impact blade piston42US 4,732,222 ATracto-Technik Paul Schmidt Maschinenfabrik KG · 1988
- Device and method for removing irregularities in or enlarging an underground duct32US 4,789,268 AInternal Pipe Drillings Limited · 1988
- Pilot head for laying pipes in the ground24US 4,026,371 AKabushiki Kaisha Komatsu Seisakusho · 1977
- Propulsion method of pipe to be buried without soil discharge and an excavator22US 5,211,510 AKidoh Construction Co., Ltd. · 1993
- Apparatus for making earth bores21US 5,339,909 ATerra AG fuer Tiefbautechnik · 1994