E21B 33/037
Protective housings therefor
E21B33/037 (Protective housings therefor) appears on 117 US grants and 85 published applications in this corpus.
Search patents in E21B- Granted patents
- 117
- Published applications
- 85
- Assignees
- 71
- Inventors
- 252
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 7 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 2 |
| 2003 | 1 | 2 |
| 2004 | 1 | 0 |
| 2005 | 1 | 1 |
| 2006 | 2 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 3 |
| 2012 | 1 | 5 |
| 2013 | 3 | 6 |
| 2014 | 3 | 5 |
| 2015 | 10 | 5 |
| 2016 | 1 | 5 |
| 2017 | 7 | 8 |
| 2018 | 3 | 5 |
| 2019 | 4 | 5 |
| 2020 | 2 | 3 |
| 2021 | 10 | 7 |
| 2022 | 3 | 3 |
| 2023 | 8 | 4 |
| 2024 | 7 | 3 |
| 2025 | 1 | 8 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Robust downhole pump barrel12 May 2026US 12,624,691 B2Q2 Artificial Lift Services LLC
- Untethered downhole tools31 Mar 2026US 12,590,497 B2Saudi Arabian Oil Company
- Fishing protection structure27 Jan 2026US 12,534,971 B1OneSubsea IP UK Limited
- Wellhead bracing system11 Feb 2025US 12,221,860 B2Chevron U.S.A.Inc.
- Well tool comprising an orientation system and method for using same24 Dec 2024US 12,173,580 B2Interwell Norway AS
- Robust Downhole Pump Barrel20 Aug 2026US 2026/0243245 A1Q2 Artificial Lift Services LLC
- Tensioned wellhead systems and related methods7 May 2026US 2026/0125962 A1Onesubsea, LLC
- Actuator, receptacle, and actuator assembly therefor4 Dec 2025US 2025/0369303 A1
- System and method for composite mudmat and mounting base25 Sep 2025US 2025/0297534 A1Baker Hughes Energy Technology UK Limited
- Robust downhole pump barrel15 May 2025US 2025/0154945 A1Ravdos Holdings Inc.
Most cited
By later US patents
- Subsea caisson and method of installing same133US 4,558,744 ACanOcean Resources Ltd. · 1985
- Power source for subsea oil wells98US 4,112,687 A1978
- ROV deployed tree cap for a subsea tree and method of installation50US 5,992,526 AFMC Corporation · 1999
- Method and apparatus for installing marine silos47US 4,744,698 A1988
- Modular undersea oil production plant44US 4,452,312 AAlteliers et Chantiers de Chantiers de Bretagne-ACB · 1984