F16L 59/15
For underground pipes
Official title: for underground pipes
F16L59/15 (For underground pipes) appears on 52 US grants and 39 published applications in this corpus.
Search patents in F16L- Granted patents
- 52
- Published applications
- 39
- Assignees
- 28
- Inventors
- 85
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 5 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 1 | 1 |
| 2006 | 3 | 2 |
| 2007 | 0 | 0 |
| 2008 | 1 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 3 |
| 2011 | 2 | 2 |
| 2012 | 0 | 0 |
| 2013 | 3 | 0 |
| 2014 | 0 | 4 |
| 2015 | 2 | 2 |
| 2016 | 0 | 2 |
| 2017 | 2 | 1 |
| 2018 | 1 | 1 |
| 2019 | 2 | 3 |
| 2020 | 2 | 2 |
| 2021 | 1 | 1 |
| 2022 | 1 | 3 |
| 2023 | 1 | 2 |
| 2024 | 1 | 6 |
| 2025 | 3 | 3 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System for transporting and storing, in particular hydrogen and its mixtures19 May 2026US 12,631,269 B2
- Subsea pipeline remediation heating17 Mar 2026US 12,578,049 B2Salamander IP Holdings LLC
- Metal tubular component, tubular threaded joint comprising such a component and method of obtaining such a component1 Jul 2025US 12,345,368 B2Vallourec Oil and Gas France
- Method for filling a trench comprising a pair of conduits and such a filled trench17 Jun 2025US 12,331,870 B2E. On Sverige AB
- Method for constructing a pipeline portion of a pipe system, and pipeline portion of a pipe system in a heating network22 Apr 2025US 12,281,725 B2Technische Universität Darmstadt
- Apparatus, system and method for insulated conducting of fluids18 Sep 2025US 2025/0290594 A1PMC Pumps Inc.
- Method for constructing a pipeline portion of a pipe system, and pipeline portion of a pipe system in a heating network10 Jul 2025US 2025/0224049 A1Technische Universität Darmstadt
- Duct assembly, methods of manufacture and use thereof19 Jun 2025US 2025/0198543 A1Emtelle UK Limited
- Metal tubular component, tubular threaded joint comprising such a component and method of obtaining such a component12 Dec 2024US 2024/0410514 A1Vallourec Oil and Gas France
- System for transporting and storing, in particular hydrogen and its mixtures5 Dec 2024US 2024/0401753 A1
Most cited
By later US patents
- Insulating tubular conduit apparatus49US 4,444,420 ABaker International Corporation · 1984
- Concentric insulated tubing string48US 4,477,106 AChevron Research Company · 1984
- Concentric tubing having bonded insulation within the annulus47US 4,453,570 AChevron Research Company · 1984
- Concentric insulated tubing string46US 4,459,731 AChevron Research Company · 1984
- Insulating tubular conduit apparatus and method33US 4,396,211 ABaker International Corporation · 1983