E21B 17/0283
Characterised by the coupling being contactless
Official title: {characterised by the coupling being contactless, e.g. inductive}
E21B17/0283 (Characterised by the coupling being contactless) appears on 259 US grants and 273 published applications in this corpus.
Search patents in E21B- Granted patents
- 259
- Published applications
- 273
- Assignees
- 74
- Inventors
- 390
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 3 |
| 2002 | 6 | 9 |
| 2003 | 7 | 4 |
| 2004 | 5 | 12 |
| 2005 | 8 | 16 |
| 2006 | 13 | 11 |
| 2007 | 9 | 16 |
| 2008 | 5 | 13 |
| 2009 | 7 | 11 |
| 2010 | 12 | 13 |
| 2011 | 14 | 16 |
| 2012 | 12 | 4 |
| 2013 | 5 | 18 |
| 2014 | 7 | 9 |
| 2015 | 14 | 8 |
| 2016 | 9 | 14 |
| 2017 | 11 | 10 |
| 2018 | 12 | 9 |
| 2019 | 8 | 8 |
| 2020 | 9 | 9 |
| 2021 | 8 | 15 |
| 2022 | 9 | 22 |
| 2023 | 23 | 13 |
| 2024 | 18 | 5 |
| 2025 | 8 | 2 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Completion locator assembly12 Aug 2025US 12,385,342 B2Schlumberger Technology Corporation
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- Split downhole transformer for high power applications27 May 2025US 12,312,870 B2Saudi Arabian Oil Company
- Wetmate connection system and method17 Sep 2026US 2026/0275814 A1Schlumberger Technology Corporation
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- Completing a wellbore with multiple electrical submersible pump docking stations2 Jul 2026US 2026/0185430 A1Saudi Arabian Oil Company
- Wellbore systems for monitoring operations23 Oct 2025US 2025/0327377 A1Halliburton Energy Services.Inc.
- Split downhole transformer for high power applications27 Mar 2025US 2025/0101812 A1Aramco Overseas Company UK Ltd
Most cited
By later US patents
- Downhole data transmission system288US 6,670,880 B1Novatek Engineering, Inc. · 2003
- Permanent downhole, wireless, two-way telemetry backbone using redundant repeaters221US 6,958,704 B2Shell Oil Company · 2005
- Annular wire harness for use in drill pipe208US 6,392,317 B12002
- Downhole data transmission system169US 6,717,501 B2Novatek Engineering, Inc. · 2004
- Transformer cable connector162US 4,605,268 ANL Industries, Inc. · 1986