F16L 53/37
The heating current flowing directly through the pipe to be heated
Official title: the heating current flowing directly through the pipe to be heated
F16L53/37 (The heating current flowing directly through the pipe to be heated) appears on 89 US grants and 107 published applications in this corpus.
Search patents in F16L- Granted patents
- 89
- Published applications
- 107
- Assignees
- 46
- Inventors
- 205
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 7 | 1 |
| 2002 | 2 | 2 |
| 2003 | 2 | 6 |
| 2004 | 7 | 3 |
| 2005 | 2 | 1 |
| 2006 | 1 | 1 |
| 2007 | 2 | 4 |
| 2008 | 1 | 1 |
| 2009 | 1 | 2 |
| 2010 | 0 | 4 |
| 2011 | 2 | 1 |
| 2012 | 0 | 6 |
| 2013 | 2 | 2 |
| 2014 | 6 | 6 |
| 2015 | 1 | 8 |
| 2016 | 4 | 7 |
| 2017 | 3 | 8 |
| 2018 | 5 | 10 |
| 2019 | 8 | 5 |
| 2020 | 7 | 6 |
| 2021 | 7 | 4 |
| 2022 | 5 | 4 |
| 2023 | 1 | 6 |
| 2024 | 4 | 4 |
| 2025 | 3 | 2 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System to convey a fluid14 Apr 2026US 12,601,440 B2Saipem S.P.A.
- Underwater heated pipe for the transport of fluids and method for assembling such a pipe7 Apr 2026US 12,595,870 B2Saipem S.P.A.
- Air duct and air system and methods and uses of said air duct and air system16 Dec 2025US 12,498,077 B2Dec Technologies B.V.
- Method for determining the linear AC electrical resistance of a steel pipe and device for implementing such a method12 Aug 2025US 12,385,864 B2Saipem S.P.A.
- Method and system for direct electric heating of a double-walled pipe for transporting fluids27 May 2025US 12,313,202 B2Saipem S.P.A.
- Device for heating a feedstock6 Aug 2026US 2026/0227019 A1BASF SE
- Electrically heatable fluid line for a component of an electrochemical energy converter, system for an electrochemical energy converter and electrochemical energy converter9 Jul 2026US 2026/0197903 A1Robert Bosch GmbH
- Systems for directly heating electric tubes for hydrocarbon upgrading21 May 2026US 2026/0143567 A1Dow Global Technologies LLC
- Heater hose with multi-voltage functionality and constant power output28 Aug 2025US 2025/0271091 A1Parker-Hannifin Corporation
- Underwater heated pipe for the transport of fluids and method for assembling such a pipe15 May 2025US 2025/0155065 A1Saipem S.P.A.
Most cited
By later US patents
- Direct electric pipeline heating62US 6,142,707 AShell Oil Company · 2000
- Induction heating for short segments of pipeline systems47US 6,278,095 B1Shell Oil Company · 2001
- Making subsea pipelines ready for electrical heating47US 6,371,693 B1Shell Oil Company · 2002
- Subsea pipeline system with electrically heated flexible pipeline45US 5,289,561 APetroleo Brasileiro S. A. · 1994
- Joint for applying current across a pipe-in-pipe system32US 6,315,497 B1Shell Oil Company · 2001