E21B 43/0175
Hydraulic schemes for production manifolds
Official title: {Hydraulic schemes for production manifolds}
E21B43/0175 (Hydraulic schemes for production manifolds) appears on 104 US grants and 82 published applications in this corpus.
Search patents in E21B- Granted patents
- 104
- Published applications
- 82
- Assignees
- 65
- Inventors
- 200
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 4 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 0 |
| 2003 | 1 | 2 |
| 2004 | 1 | 2 |
| 2005 | 1 | 0 |
| 2006 | 1 | 3 |
| 2007 | 1 | 0 |
| 2008 | 0 | 3 |
| 2009 | 1 | 1 |
| 2010 | 2 | 1 |
| 2011 | 2 | 2 |
| 2012 | 1 | 1 |
| 2013 | 0 | 0 |
| 2014 | 2 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 1 | 4 |
| 2018 | 2 | 10 |
| 2019 | 4 | 3 |
| 2020 | 5 | 6 |
| 2021 | 9 | 11 |
| 2022 | 8 | 6 |
| 2023 | 7 | 10 |
| 2024 | 9 | 7 |
| 2025 | 8 | 5 |
| 2026 | 4 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Overpressure compensation systems and assemblies for a subsea manifold11 Aug 2026US 12,704,862 B2FMC Technologies, Inc.
- Modular subsea manifold system17 Mar 2026US 12,577,967 B2Onesubsea, LLC
- Apparatus, system and process for regulating a control mechanism of a well10 Mar 2026US 12,571,284 B2Intelligent Wellhead Systems Inc.
- Configurable block manifold system20 Jan 2026US 12,529,440 B2Vetco Gray Scandinavia.AS
- Method of configuring a subsea arrangement7 Oct 2025US 12,435,602 B2Aker Solutions Do Brasil Ltda
- Pigging, a manifold valve block and fluid flow control10 Sep 2026US 2026/0266163 A1Baker Hughes Energy Technology UK Limited
- Subsea conduit23 Jul 2026US 2026/0210383 A1Onesubsea, LLC
- Apparatus, systems and methods for oil and gas operations28 May 2026US 2026/0146512 A1Enpro Subsea Limited
- Sliding Connector Spool6 Nov 2025US 2025/0341269 A1SRI Energy, Inc.
- Apparatus, system and process for regulating a control mechanism of a well17 Jul 2025US 2025/0230727 A1Intelligent Wellhead Systems Inc.
Most cited
By later US patents
- Frac manifold missile and fitting148US 10,982,523 B1KHOLLE Magnolia 2015, LLC · 2021
- Flowline junction fittings for frac systems127US 10,662,749 B1KHOLLE Magnolia 2015, LLC · 2020
- Power source for subsea oil wells98US 4,112,687 A1978
- Subsea pumping device incorporating a wellhead aspirator80US 5,199,496 ATexaco Inc. · 1993
- Subsea production system79US 7,093,661 B2Aker Kvaerner Subsea AS · 2006