Flexible double walled hose connection
US-10794522-B2 · Oct 6, 2020 · US
Double-walled hoses
Double-walled hoses · 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 | F16L11/20 |
| Official title | Double-walled hoses |
| Display label | Double-walled hoses |
| Total patents | 129 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 12 |
| 2017 | 11 |
| 2018 | 14 |
| 2019 | 12 |
| 2020 | 17 |
| 2021 | 15 |
| 2022 | 15 |
| 2023 | 10 |
| 2024 | 8 |
| 2025 | 9 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Conduits for transporting fluids
US-10788148-B2 · Sep 29, 2020 · US
Connector
US-2020240309-A1 · Jul 30, 2020 · US
Flexible vacuum-insulated line
US-2020224816-A1 · Jul 16, 2020 · US
Pipe for control and forced circulation of corrosion-inhibiting fluids in the annulus thereof
US-2020166158-A1 · May 28, 2020 · US
Subsea pipe-in-pipe structures
US-10577871-B2 · Mar 3, 2020 · US
Method of installing an unbonded flexible pipe
US-10513896-B2 · Dec 24, 2019 · US
Monitoring system and method for a multiple-walled fluid system
US-10495542-B2 · Dec 3, 2019 · US
Hose assembly with modified thermoplastic inner tube
US-10458576-B2 · Oct 29, 2019 · US
Connection end-piece of a flexible pipe for transporting fluid and associated method
US-10451206-B2 · Oct 22, 2019 · US
Flexible double walled hose connection
US-2019309885-A1 · Oct 10, 2019 · US
Termination bulkheads for subsea pipe-in-pipe systems
US-10435953-B2 · Oct 8, 2019 · US
Gas turbine engine fuel injector
US-2019292987-A1 · Sep 26, 2019 · US
Reelable pipe
US-2019271412-A1 · Sep 5, 2019 · US
Double skinned pipe assembly
US-10400920-B2 · Sep 3, 2019 · US
Double skinned pipe assembly
US-2019242500-A9 · Aug 8, 2019 · US
Sealing arrangements for subsea pipe-in-pipe systems
US-10352107-B2 · Jul 16, 2019 · US
Sealing arrangements for subsea pipe-in-pipe systems
US-10344539-B2 · Jul 9, 2019 · US
A method of installing an unbonded flexible pipe
US-2018298705-A1 · Oct 18, 2018 · US
Hose Line and Method for Producing Same
US-2018289923-A1 · Oct 11, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16L11/20?
- CPC F16L11/20 is the Cooperative Patent Classification code for “Double-walled hoses.”
- How many patents are filed under CPC F16L11/20 (Double-walled hoses)?
- Our database includes 129 publications tagged with this CPC code.
- Is patent activity under CPC F16L11/20 growing?
- Publication counts under this code: 8 in 2024 vs 9 in 2025 (latest complete years).