E21B 43/01
Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials
Official title: specially adapted for obtaining from underwater installations
E21B43/01 (Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials) appears on 1,565 US grants and 1,334 published applications in this corpus.
Search patents in E21B- Granted patents
- 1,565
- Published applications
- 1,334
- Assignees
- 524
- Inventors
- 2,857
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 16 | 0 |
| 1977 | 15 | 0 |
| 1978 | 27 | 0 |
| 1979 | 19 | 0 |
| 1980 | 27 | 0 |
| 1981 | 25 | 0 |
| 1982 | 24 | 0 |
| 1983 | 26 | 0 |
| 1984 | 34 | 0 |
| 1985 | 14 | 0 |
| 1986 | 27 | 0 |
| 1987 | 37 | 0 |
| 1988 | 18 | 0 |
| 1989 | 21 | 0 |
| 1990 | 9 | 0 |
| 1991 | 10 | 0 |
| 1992 | 12 | 0 |
| 1993 | 15 | 0 |
| 1994 | 11 | 0 |
| 1995 | 14 | 0 |
| 1996 | 11 | 0 |
| 1997 | 8 | 0 |
| 1998 | 14 | 0 |
| 1999 | 18 | 0 |
| 2000 | 24 | 0 |
| 2001 | 26 | 12 |
| 2002 | 29 | 19 |
| 2003 | 26 | 20 |
| 2004 | 19 | 26 |
| 2005 | 7 | 17 |
| 2006 | 19 | 32 |
| 2007 | 12 | 16 |
| 2008 | 17 | 28 |
| 2009 | 12 | 31 |
| 2010 | 20 | 45 |
| 2011 | 27 | 83 |
| 2012 | 41 | 120 |
| 2013 | 50 | 80 |
| 2014 | 78 | 70 |
| 2015 | 86 | 85 |
| 2016 | 73 | 64 |
| 2017 | 63 | 63 |
| 2018 | 54 | 91 |
| 2019 | 67 | 72 |
| 2020 | 64 | 62 |
| 2021 | 56 | 76 |
| 2022 | 59 | 70 |
| 2023 | 56 | 47 |
| 2024 | 58 | 37 |
| 2025 | 48 | 33 |
| 2026 | 22 | 35 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- E21B 43/013Connecting a production flow line to an underwater well head447
- E21B 43/017Production satellite stations, i.e. underwater installations comprising a plurality of satellite well309
- E21B 43/0122Collecting oil or the like from a submerged leakage260
- E21B 43/0107Connecting of flow lines to offshore structures253
Recent patents
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- Overpressure compensation systems and assemblies for a subsea manifold11 Aug 2026US 12,704,862 B2FMC Technologies, Inc.
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- Multi-purpose robot end effector for riser running process activities24 Sep 2026US 2026/0286790 A1Grant Prideco, lnc.
- System and method for subsea assembly of a guide cone on a manifold hub17 Sep 2026US 2026/0275832 A1Petroleo Brasileiro S.A. - Petrobras
- Subsea pumping and booster system17 Sep 2026US 2026/0275839 A1Baker Hughes Energy Technology UK Limited
- Pigging, a manifold valve block and fluid flow control10 Sep 2026US 2026/0266163 A1Baker Hughes Energy Technology UK Limited
Most cited
By later US patents
- Method for dumping and disposing of carbon dioxide gas and apparatus therefor300US 5,261,490 ANKK Corporation · 1993
- Downhole production well control system and method208US 5,732,776 ABaker Hughes Incorporated · 1998
- Method and apparatus for the remote control and monitoring of production wells168US 5,706,896 ABaker Hughes Incorporated · 1998
- Production well telemetry system and method158US 5,941,307 ABaker Hughes Incorporated · 1999
- Frac manifold missile and fitting148US 10,982,523 B1KHOLLE Magnolia 2015, LLC · 2021