E21B 17/0426
With a threaded cylindrical portion
Official title: {with a threaded cylindrical portion, e.g. for percussion rods}
E21B17/0426 (With a threaded cylindrical portion) appears on 183 US grants and 132 published applications in this corpus.
Search patents in E21B- Granted patents
- 183
- Published applications
- 132
- Assignees
- 104
- Inventors
- 282
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 7 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 5 | 0 |
| 1987 | 5 | 0 |
| 1988 | 5 | 0 |
| 1989 | 5 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 4 | 0 |
| 1999 | 5 | 0 |
| 2000 | 6 | 0 |
| 2001 | 7 | 3 |
| 2002 | 4 | 6 |
| 2003 | 1 | 1 |
| 2004 | 4 | 7 |
| 2005 | 3 | 5 |
| 2006 | 4 | 6 |
| 2007 | 5 | 3 |
| 2008 | 3 | 6 |
| 2009 | 4 | 2 |
| 2010 | 3 | 5 |
| 2011 | 5 | 2 |
| 2012 | 6 | 7 |
| 2013 | 1 | 4 |
| 2014 | 1 | 1 |
| 2015 | 3 | 2 |
| 2016 | 3 | 8 |
| 2017 | 6 | 4 |
| 2018 | 0 | 9 |
| 2019 | 4 | 1 |
| 2020 | 8 | 8 |
| 2021 | 6 | 11 |
| 2022 | 6 | 4 |
| 2023 | 8 | 7 |
| 2024 | 5 | 12 |
| 2025 | 12 | 7 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Tandem seal adapter for perforating guns11 Aug 2026US 12,704,027 B2DynaEnergetics Europe GmbH
- Threaded connection for exploration and production of a hydrocarbon well4 Aug 2026US 12,698,683 B2Tenaris Connections Limited
- Fully automated perforating gun2 Jun 2026US 12,644,362 B2Halliburton Energy Services.Inc.
- Flexible casing systems and methods4 Nov 2025US 12,460,750 B2Deep Isolation, Inc.
- Valve rod guides for bottom hole pump assemblies, and related methods and parts12 Aug 2025US 12,385,330 B2Optimum Pump Ltd.
- Fully automated perforating gun17 Sep 2026US 2026/0275835 A1Halliburton Energy Services.Inc.
- Tandem seal adapter for perforating guns9 Oct 2025US 2025/0314135 A1DynaEnergetics Europe GmbH
- Oil well pipe connection structure and oil well pipe5 Jun 2025US 2025/0179879 A1NejiLaw Inc.
- Lifting plug17 Apr 2025US 2025/0122766 A1Vallourec Oil and Gas France
- Drilling component3 Apr 2025US 2025/0109637 A1Sandvik Mining and Construction Tools AB
Most cited
By later US patents
- Pipe connection170US 4,253,687 AWhiting Oilfield Rental, Inc. · 1981
- Drill rod for percussion drilling159US 5,064,004 ASandvik AB · 1991
- Threaded connector155US 4,373,754 AHydril Company · 1983
- Threaded tool joint with dual mating shoulders79US 5,810,401 AFrank's Casing Crew and Rental Tools, Inc. · 1998
- Well pipe joint71US 4,688,832 AHydril Company · 1987