F16L 1/26
Repairing or joining pipes on or under water
F16L1/26 (Repairing or joining pipes on or under water) appears on 595 US grants and 401 published applications in this corpus.
Search patents in F16L- Granted patents
- 595
- Published applications
- 401
- Assignees
- 282
- Inventors
- 928
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 13 | 0 |
| 1978 | 19 | 0 |
| 1979 | 11 | 0 |
| 1980 | 12 | 0 |
| 1981 | 12 | 0 |
| 1982 | 9 | 0 |
| 1983 | 9 | 0 |
| 1984 | 12 | 0 |
| 1985 | 6 | 0 |
| 1986 | 12 | 0 |
| 1987 | 12 | 0 |
| 1988 | 5 | 0 |
| 1989 | 17 | 0 |
| 1990 | 4 | 0 |
| 1991 | 10 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 9 | 0 |
| 1995 | 14 | 0 |
| 1996 | 5 | 0 |
| 1997 | 3 | 0 |
| 1998 | 8 | 0 |
| 1999 | 10 | 0 |
| 2000 | 8 | 0 |
| 2001 | 13 | 2 |
| 2002 | 7 | 1 |
| 2003 | 7 | 5 |
| 2004 | 6 | 10 |
| 2005 | 4 | 7 |
| 2006 | 6 | 1 |
| 2007 | 4 | 3 |
| 2008 | 4 | 19 |
| 2009 | 4 | 12 |
| 2010 | 8 | 25 |
| 2011 | 12 | 17 |
| 2012 | 11 | 18 |
| 2013 | 14 | 23 |
| 2014 | 20 | 24 |
| 2015 | 37 | 24 |
| 2016 | 14 | 19 |
| 2017 | 17 | 22 |
| 2018 | 24 | 30 |
| 2019 | 27 | 29 |
| 2020 | 37 | 29 |
| 2021 | 17 | 24 |
| 2022 | 21 | 16 |
| 2023 | 16 | 11 |
| 2024 | 17 | 17 |
| 2025 | 10 | 10 |
| 2026 | 7 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Direct tie-in of a pipeline29 Sep 2026US 12,747,808 B2Equinor Energy AS
- Hydraulic coupling with dovetail seal having multiple radial sealing surfaces and inner biasing element4 Aug 2026US 12,698,858 B2National Coupling Company, Inc.
- ROV operated hot stab30 Jun 2026US 12,668,332 B2Oceaneering International, Inc.
- Connector for subsea pipelines and risers, and repair of a pipeline or riser utilizing the connector5 May 2026US 12,618,504 B2
- Manipulator device to apply modules around a pipeline, laying vessel comprising said device and method to operate said laying vessel3 Mar 2026US 12,565,945 B2Saipem S.P.A.
- Method and system for preparing subsea equipment for use with diverless installation means2 Jul 2026US 2026/0185634 A1Petroleo Brasileiro S.A. - Petrobras
- Subsea tool and method for handling hydraulic hoses11 Jun 2026US 2026/0160359 A1
- Mounting method for sea outfall pipeline in shallow section5 Feb 2026US 2026/0036221 A1CCCC third Harbor Bureau No.6 Engineering (Xiamen) Co., Ltd
- Device for access to the annular space of submarine flexible pipes through relief valves and associated methods11 Dec 2025US 2025/0377053 A1Petroleo Brasileiro S.A. - Petrobras
- Isolation system and methods for subsea pipelines4 Dec 2025US 2025/0369535 A1Petroleo Brasileiro S.A. - Petrobras
Most cited
By later US patents
- Apparatus for rigidly interconnecting misaligned pipe ends133US 4,045,054 AHydroTech International, Inc. · 1977
- Undersea hydraulic coupling and metal seal81US 4,694,859 ANational Coupling Company, Inc. · 1987
- Flowline connector with subsea equipment package74US 6,481,504 B1FMC Corporation · 2002
- Pressure balanced hydraulic coupling with metal seals65US 5,099,882 ANational Coupling Company, Inc. · 1992
- Diverless subsea hot tap system65US 6,290,432 B1Williams Field Services Gulf Coast Company, L.P. · 2001