E21B 17/03
Between drilling rod or pipe and drill motor or surface drive
Official title: between drilling rod or pipe and drill motor {or surface drive}, e.g. between drilling rod and hammer
E21B17/03 (Between drilling rod or pipe and drill motor or surface drive) appears on 179 US grants and 180 published applications in this corpus.
Search patents in E21B- Granted patents
- 179
- Published applications
- 180
- Assignees
- 100
- Inventors
- 357
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 5 | 0 |
| 2001 | 2 | 3 |
| 2002 | 4 | 5 |
| 2003 | 5 | 4 |
| 2004 | 2 | 3 |
| 2005 | 6 | 9 |
| 2006 | 5 | 3 |
| 2007 | 5 | 2 |
| 2008 | 0 | 2 |
| 2009 | 2 | 2 |
| 2010 | 1 | 7 |
| 2011 | 4 | 5 |
| 2012 | 2 | 6 |
| 2013 | 6 | 9 |
| 2014 | 3 | 5 |
| 2015 | 7 | 13 |
| 2016 | 9 | 11 |
| 2017 | 10 | 14 |
| 2018 | 9 | 23 |
| 2019 | 13 | 7 |
| 2020 | 20 | 6 |
| 2021 | 7 | 8 |
| 2022 | 5 | 7 |
| 2023 | 6 | 6 |
| 2024 | 8 | 6 |
| 2025 | 8 | 8 |
| 2026 | 4 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Drilling assembly14 Apr 2026US 12,601,223 B2BAUER Spezialtiefbau GmbH
- Apparatus and method for supporting a collar region of a blast hole during drilling31 Mar 2026US 12,590,496 B2Aquirian Technology Pty Ltd
- Coatings for wear surfaces and related apparatuses, devices, systems, and methods10 Feb 2026US 12,546,172 B2ChampionX LLC
- Threaded connection27 Jan 2026US 12,534,962 B2TRACTO-TECHNIK GmbH & Co. KG
- Downhole tool, method, and system25 Nov 2025US 12,480,367 B2
- Sealed coupling for tubing string17 Sep 2026US 2026/0275815 A1
- Threaded connection30 Apr 2026US 2026/0117604 A1TRACTO-TECHNIK GmbH & Co. KG
- Joint for downhole motor23 Apr 2026US 2026/0110221 A1
- Coatings for wear surfaces and related apparatuses, devices, systems, and methods12 Mar 2026US 2026/0071504 A1ChampionX LLC
- Clamping head arrangement5 Mar 2026US 2026/0063005 A1EURODRILL GmbH
Most cited
By later US patents
- Well system221US 6,296,066 B1Halliburton Energy Services.Inc. · 2001
- Well system175US 7,172,038 B2Halliburton Energy Services.Inc. · 2007
- Well system127US 6,923,273 B2Halliburton Energy Services.Inc. · 2005
- Apparatus and method for directional drilling with coiled tubing93US 6,571,888 B2Precision Drilling Technology Services Group Inc. · 2003
- Steerable underreaming bottom hole assembly and method57US 6,470,977 B1Halliburton Energy Services.Inc. · 2002