E21B 17/0285
Characterised by electrically insulating elements
Official title: {characterised by electrically insulating elements}
E21B17/0285 (Characterised by electrically insulating elements) appears on 365 US grants and 324 published applications in this corpus.
Search patents in E21B- Granted patents
- 365
- Published applications
- 324
- Assignees
- 140
- Inventors
- 607
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 5 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 5 | 0 |
| 1986 | 6 | 0 |
| 1987 | 3 | 0 |
| 1988 | 5 | 0 |
| 1989 | 2 | 0 |
| 1990 | 5 | 0 |
| 1991 | 1 | 0 |
| 1992 | 7 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 7 | 0 |
| 2001 | 0 | 1 |
| 2002 | 7 | 7 |
| 2003 | 6 | 13 |
| 2004 | 6 | 18 |
| 2005 | 6 | 15 |
| 2006 | 26 | 10 |
| 2007 | 8 | 9 |
| 2008 | 8 | 12 |
| 2009 | 9 | 11 |
| 2010 | 12 | 9 |
| 2011 | 4 | 9 |
| 2012 | 11 | 12 |
| 2013 | 3 | 5 |
| 2014 | 8 | 21 |
| 2015 | 14 | 22 |
| 2016 | 13 | 14 |
| 2017 | 14 | 20 |
| 2018 | 17 | 18 |
| 2019 | 23 | 14 |
| 2020 | 19 | 9 |
| 2021 | 16 | 17 |
| 2022 | 16 | 17 |
| 2023 | 16 | 14 |
| 2024 | 15 | 17 |
| 2025 | 15 | 2 |
| 2026 | 5 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Systems, methods and apparatus for downhole monitoring of production conditions using EM telemetry1 Sep 2026US 12,723,509 B2Geo Psi Pty Ltd
- External gap assembly28 Jul 2026US 12,692,754 B2Quantum Energy Technologies
- Wet connect method which includes stabbing the innermost layer of a conformal multilayer soft shell apparatus containing conductive material5 May 2026US 12,618,294 B2Saudi Arabian Oil Company
- Two-conductor system for earth boring rod sections21 Apr 2026US 12,607,074 B2TRACTO-TECHNIK GmbH & Co. KG
- Downhole concentric wet-mate connector14 Apr 2026US 12,601,227 B2Halliburton Energy Services.Inc.
- Dead Short Switch and Method of Use10 Sep 2026US 2026/0266144 A1Gunnar LLLP
- Integral multi-master power and communication bus rail system23 Jul 2026US 2026/0213516 A1OneSubsea IP UK Limited
- Downhole electrical conductor movement arrestor25 Jun 2026US 2026/0176924 A1Halliburton Energy Services.Inc.
- Threaded connection30 Apr 2026US 2026/0117600 A1Tenaris Connections Limited
- Systems, methods and apparatus for downhole monitoring of production conditions using em telemetry30 Apr 2026US 2026/0117647 A1Geo Psi Pty Ltd
Most cited
By later US patents
- Downhole data transmission system288US 6,670,880 B1Novatek Engineering, Inc. · 2003
- In situ thermal processing of a hydrocarbon containing formation via backproducing through a heater well270US 6,932,155 B2Shell Oil Company · 2005
- In situ recovery from a hydrocarbon containing formation using barriers250US 7,077,198 B2Shell Oil Company · 2006
- In situ thermal processing of a hydrocarbon containing formation using a natural distributed combustor233US 7,114,566 B2Shell Oil Company · 2006
- Producing hydrocarbons and non-hydrocarbon containing materials when treating a hydrocarbon containing formation229US 7,100,994 B2Shell Oil Company · 2006