Method and system for direct electric heating of a double-walled pipe for transporting fluids
US-2021301964-A1 · Sep 30, 2021 · US
the heating current flowing directly through the pipe to be heated
the heating current flowing directly through the pipe to be heated · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F16L53/37 |
| Official title | the heating current flowing directly through the pipe to be heated |
| Display label | the heating current flowing directly through the pipe to be heated |
| Total patents | 87 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 7 |
| 2017 | 10 |
| 2018 | 13 |
| 2019 | 9 |
| 2020 | 13 |
| 2021 | 9 |
| 2022 | 5 |
| 2023 | 5 |
| 2024 | 8 |
| 2025 | 4 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
A tube structure and a method for manufacturing a tube structure
US-2021146418-A1 · May 20, 2021 · US
Connection assembly, in particular for conducting aqueous urea solutions
US-2021140576-A1 · May 13, 2021 · US
Composite strip, and methods for forming a junction between two conduits
US-10907754-B2 · Feb 2, 2021 · US
Clamping device and method for providing an electrical connection between a subsea pipeline and an electrical conductor
US-10897094-B2 · Jan 19, 2021 · US
Method and a system for controlling the temperature of a fluid in an unbonded flexible pipe
US-10865931-B2 · Dec 15, 2020 · US
Thermal management method and apparatus
US-2020378540-A1 · Dec 3, 2020 · US
Unbonded flexible pipe
US-10851918-B2 · Dec 1, 2020 · US
Device and method for heating a fluid in a pipeline using three-phase current
US-10774969-B2 · Sep 15, 2020 · US
Direct Electrical Heating Arrangement with a Power Electronic Converter
US-2020252000-A1 · Aug 6, 2020 · US
Smart subsea pipeline with channels
US-10683950-B2 · Jun 16, 2020 · US
Power umbilical with impact protection
US-2020176149-A1 · Jun 4, 2020 · US
Direct electrical heating arrangement comprising a power electronic converter
US-10666157-B2 · May 26, 2020 · US
Subsea direct electric heating system
US-10641424-B2 · May 5, 2020 · US
Vacuum pump and heating device therefor
US-2020092952-A1 · Mar 19, 2020 · US
Smart subsea pipeline with conduits
US-10544893-B2 · Jan 28, 2020 · US
Unbonded flexible pipe and an end-fitting
US-2020011467-A1 · Jan 9, 2020 · US
Clamping device and method for providing an electrical connection between a subsea pipeline and an electrical conductor
US-2020006870-A1 · Jan 2, 2020 · US
Subsea direct electrical heating power supply system, direct electrical heating system and method of operating a subsea direct electrical heating power supply system
US-2019373677-A1 · Dec 5, 2019 · US
Smart subsea pipeline
US-10443763-B2 · Oct 15, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16L53/37?
- CPC F16L53/37 is the Cooperative Patent Classification code for “the heating current flowing directly through the pipe to be heated.”
- How many patents are filed under CPC F16L53/37 (the heating current flowing directly through the pipe to be heated)?
- Our database includes 87 publications tagged with this CPC code.
- Is patent activity under CPC F16L53/37 growing?
- Publication counts under this code: 8 in 2024 vs 4 in 2025 (latest complete years).