E21B 41/0007
Equipment or details not covered by groups e21b15/00 - e21b40/00: for underwater
Official title: {for underwater installations (E21B41/005, E21B41/04, E21B41/06, E21B41/08, E21B41/10 take precedence)}
E21B41/0007 (Equipment or details not covered by groups e21b15/00 - e21b40/00: for underwater) appears on 649 US grants and 729 published applications in this corpus.
Search patents in E21B- Granted patents
- 649
- Published applications
- 729
- Assignees
- 312
- Inventors
- 1,541
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 6 | 0 |
| 1981 | 3 | 0 |
| 1982 | 5 | 0 |
| 1983 | 5 | 0 |
| 1984 | 5 | 0 |
| 1985 | 9 | 0 |
| 1986 | 5 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 5 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 6 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 3 |
| 2003 | 1 | 3 |
| 2004 | 5 | 5 |
| 2005 | 1 | 5 |
| 2006 | 4 | 11 |
| 2007 | 7 | 3 |
| 2008 | 5 | 7 |
| 2009 | 5 | 15 |
| 2010 | 4 | 16 |
| 2011 | 9 | 21 |
| 2012 | 17 | 37 |
| 2013 | 12 | 35 |
| 2014 | 24 | 48 |
| 2015 | 46 | 53 |
| 2016 | 46 | 53 |
| 2017 | 51 | 59 |
| 2018 | 34 | 49 |
| 2019 | 43 | 47 |
| 2020 | 37 | 51 |
| 2021 | 44 | 43 |
| 2022 | 38 | 44 |
| 2023 | 40 | 28 |
| 2024 | 40 | 27 |
| 2025 | 31 | 36 |
| 2026 | 22 | 30 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Subsea actuation sub-system29 Sep 2026US 12,747,650 B2TechnipFMC Norge AS
- Subsea pumping and booster system22 Sep 2026US 12,742,373 B2Baker Hughes Energy Technology UK Limited
- Apparatus and methods for monitoring optical fiber system integrity15 Sep 2026US 12,736,438 B2OneSubsea IP UK Limited
- Fasteners for an underwater drilling assembly18 Aug 2026US 12,709,366 B2Resolve Marine Group, Inc.
- Systems and methods for subsea fluid handling14 Jul 2026US 12,680,424 B2Onesubsea, LLC
- Apparatus, system and method for tethering a subsea well assembly8 Oct 2026US 2026/0309005 A1Tla Subsea Ltd
- Pigging, a manifold valve block and fluid flow control10 Sep 2026US 2026/0266163 A1Baker Hughes Energy Technology UK Limited
- Sealing basket27 Aug 2026US 2026/0251032 A1Abu Dhabi Company for Offshore Petroleum Operations Limited
- Connector assemblies and processes for using same27 Aug 2026US 2026/0251236 A1Koil Energy Solutions, Inc.
- Subsea manifold with retrievable modules and resident valve arrangement20 Aug 2026US 2026/0243151 A1Technipfmc Do Brasil Ltda
Most cited
By later US patents
- System and technique for monitoring and managing the deployment of subsea equipment140US 6,725,924 B2Schlumberger Technology Corporation · 2004
- Subsea communications system139US 7,261,162 B2Schlumberger Technology Corporation · 2007
- Power source for subsea oil wells98US 4,112,687 A1978
- Rotating control device docking station88US 7,926,593 B2Weatherford/Lamb, Inc. · 2011
- Method and system for maintenance and servicing of subsea wells70US 4,730,677 AOtis Engineering Corporation · 1988