E21B 17/04
Between rod or the like and bit or between rod and rod
Official title: between rod {or the like} and bit or between rod and rod {or the like}
E21B17/04 (Between rod or the like and bit or between rod and rod) appears on 3,890 US grants and 3,291 published applications in this corpus.
Search patents in E21B- Granted patents
- 3,890
- Published applications
- 3,291
- Assignees
- 1,216
- Inventors
- 5,352
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 23 | 0 |
| 1977 | 28 | 0 |
| 1978 | 23 | 0 |
| 1979 | 17 | 0 |
| 1980 | 28 | 0 |
| 1981 | 40 | 0 |
| 1982 | 20 | 0 |
| 1983 | 32 | 0 |
| 1984 | 53 | 0 |
| 1985 | 59 | 0 |
| 1986 | 59 | 0 |
| 1987 | 62 | 0 |
| 1988 | 44 | 0 |
| 1989 | 50 | 0 |
| 1990 | 56 | 0 |
| 1991 | 40 | 0 |
| 1992 | 53 | 0 |
| 1993 | 45 | 0 |
| 1994 | 48 | 0 |
| 1995 | 42 | 0 |
| 1996 | 27 | 0 |
| 1997 | 26 | 0 |
| 1998 | 47 | 0 |
| 1999 | 44 | 0 |
| 2000 | 58 | 0 |
| 2001 | 70 | 12 |
| 2002 | 50 | 44 |
| 2003 | 40 | 72 |
| 2004 | 64 | 109 |
| 2005 | 45 | 75 |
| 2006 | 57 | 69 |
| 2007 | 59 | 69 |
| 2008 | 54 | 87 |
| 2009 | 40 | 64 |
| 2010 | 81 | 117 |
| 2011 | 65 | 114 |
| 2012 | 91 | 110 |
| 2013 | 79 | 125 |
| 2014 | 93 | 156 |
| 2015 | 120 | 198 |
| 2016 | 120 | 199 |
| 2017 | 168 | 223 |
| 2018 | 180 | 230 |
| 2019 | 230 | 177 |
| 2020 | 199 | 154 |
| 2021 | 187 | 189 |
| 2022 | 163 | 169 |
| 2023 | 190 | 153 |
| 2024 | 165 | 160 |
| 2025 | 174 | 131 |
| 2026 | 82 | 85 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Vibrational damper for elevated temperatures6 Oct 2026US 12,753,659 B2Baker Hughes Oilfield Operations LLC
- Tool string transportation device6 Oct 2026US 12,753,667 B2Petromac IP Limited
- Electro-mechanical disconnect mechanism29 Sep 2026US 12,747,641 B2Schlumberger Technology Corporation
- Active torsional isolator and damper29 Sep 2026US 12,747,642 B2Halliburton Energy Services.Inc.
- Connector assembly for emergency decoupling of a subsea end fitting of a movable subsea structure29 Sep 2026US 12,747,653 B2S3N Ventus Ltd
- Threaded Joint8 Oct 2026US 2026/0308988 A1Diversity Technologies Corporation
- Downhole apparatus for oscillating a tubular string8 Oct 2026US 2026/0308989 A1Grant Prideco, L.P.
- Bi-directional Running Tool for Expandable Liner Hanger8 Oct 2026US 2026/0309007 A1Halliburton Energy Services.Inc.
- Components, assemblies, systems, and methods providing enhanced reliability of connections between components of high-power pumps1 Oct 2026US 2026/0298279 A1Vulcan Industrial Holdings, LLC
- Well pipe having electrical conductor with improved electrical contacts1 Oct 2026US 2026/0298379 A1
Most cited
By later US patents
- Expandable joint connector281US 6,409,175 B1Grant Prideco, L.P. · 2002
- Composite drill pipe201US 5,332,049 ABrunswick Corporation · 1994
- Method and apparatus for downhole fluid blast cleaning of oil well casing191US 5,797,454 ASonoma Corporation · 1998
- Method for resisting galling187US 4,468,309 AWhite Engineering Corporation · 1984
- Buttress thread form180US 5,092,635 ABaker Hughes Incorporated · 1992