- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16L - Pipes; joints or fittings for pipes; supports for pipes, cables or protective tubing; means for thermal insulation in general
- F16L 9/18 - Double-walled pipes; Multi-channel pipes or pipe assemblies
Patent holdings for IPC class F16L 9/18
Total number of patents in this class: 435
10-year publication summary
|
34
|
37
|
45
|
29
|
39
|
34
|
30
|
21
|
26
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Acergy France SAS | 126 |
17 |
| The Boeing Company | 19911 |
12 |
| Technip France | 716 |
10 |
| JFE Steel Corporation | 6557 |
8 |
| Rtx Corporation | 9109 |
8 |
| Airbus Operations GmbH | 3290 |
7 |
| Saipem S.A. | 227 |
6 |
| Subsea 7 Limited | 215 |
6 |
| Trinity Bay Equipment Holdings, LLC | 103 |
6 |
| Titeflex Corporation | 84 |
5 |
| Wartsila Finland Oy | 740 |
5 |
| Allison Transmission, Inc. | 834 |
4 |
| ITP SA | 46 |
4 |
| Reelwell AS | 66 |
4 |
| Chevron U.S.A. Inc. | 3856 |
3 |
| Calsonic Kansei Corporation | 666 |
3 |
| Green HVAC Ducts USA, LLC | 4 |
3 |
| Hexagon Technology AS | 131 |
3 |
| Tata Steel Nederland Technology BV | 145 |
3 |
| Total SA | 504 |
3 |
| Other owners | 315 |