E21B 17/042
Threaded
E21B17/042 (Threaded) appears on 1,583 US grants and 1,463 published applications in this corpus.
Search patents in E21B- Granted patents
- 1,583
- Published applications
- 1,463
- Assignees
- 604
- Inventors
- 2,317
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 14 | 0 |
| 1978 | 5 | 0 |
| 1979 | 4 | 0 |
| 1980 | 4 | 0 |
| 1981 | 7 | 0 |
| 1982 | 5 | 0 |
| 1983 | 11 | 0 |
| 1984 | 16 | 0 |
| 1985 | 30 | 0 |
| 1986 | 33 | 0 |
| 1987 | 31 | 0 |
| 1988 | 17 | 0 |
| 1989 | 20 | 0 |
| 1990 | 17 | 0 |
| 1991 | 14 | 0 |
| 1992 | 15 | 0 |
| 1993 | 8 | 0 |
| 1994 | 16 | 0 |
| 1995 | 15 | 0 |
| 1996 | 6 | 0 |
| 1997 | 8 | 0 |
| 1998 | 14 | 0 |
| 1999 | 11 | 0 |
| 2000 | 21 | 0 |
| 2001 | 26 | 4 |
| 2002 | 17 | 20 |
| 2003 | 19 | 37 |
| 2004 | 28 | 44 |
| 2005 | 20 | 34 |
| 2006 | 25 | 32 |
| 2007 | 20 | 28 |
| 2008 | 27 | 32 |
| 2009 | 19 | 22 |
| 2010 | 25 | 40 |
| 2011 | 27 | 45 |
| 2012 | 35 | 43 |
| 2013 | 23 | 39 |
| 2014 | 31 | 56 |
| 2015 | 37 | 87 |
| 2016 | 42 | 84 |
| 2017 | 72 | 113 |
| 2018 | 80 | 122 |
| 2019 | 111 | 87 |
| 2020 | 102 | 87 |
| 2021 | 91 | 96 |
| 2022 | 90 | 89 |
| 2023 | 91 | 63 |
| 2024 | 73 | 67 |
| 2025 | 83 | 49 |
| 2026 | 22 | 43 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Tool string transportation device6 Oct 2026US 12,753,667 B2Petromac IP Limited
- Systems, methods and apparatus for downhole monitoring of production conditions using EM telemetry1 Sep 2026US 12,723,509 B2Geo Psi Pty Ltd
- Threaded joint with anti-unscrewing device25 Aug 2026US 12,716,299 B2Vallourec Oil and Gas France
- Metal seal weld-on connector for conductor casing18 Aug 2026US 12,710,117 B2United Drilling Tools Ltd.
- Tandem seal adapter for perforating guns11 Aug 2026US 12,704,027 B2DynaEnergetics Europe GmbH
- Threaded Joint8 Oct 2026US 2026/0308988 A1Diversity Technologies Corporation
- 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
- Work string tubing connection restoration24 Sep 2026US 2026/0284768 A1Postle Industries, Inc.
- Fixed-Volume Setting Tool24 Sep 2026US 2026/0286798 A1DBK Industries, LLC
Most cited
By later US patents
- Expandable joint connector281US 6,409,175 B1Grant Prideco, L.P. · 2002
- Method for resisting galling187US 4,468,309 AWhite Engineering Corporation · 1984
- Buttress thread form180US 5,092,635 ABaker Hughes Incorporated · 1992
- Thread form with multifacited flanks177US 6,254,146 B1John Gandy Corporation · 2001
- Pipe connection170US 4,253,687 AWhiting Oilfield Rental, Inc. · 1981