- 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: 438
10-year publication summary
46
|
34
|
37
|
45
|
29
|
39
|
34
|
29
|
20
|
8
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Acergy France SAS | 124 |
16 |
The Boeing Company | 19843 |
12 |
Technip France | 737 |
10 |
JFE Steel Corporation | 6067 |
8 |
Rtx Corporation | 8674 |
8 |
Saipem S.A. | 223 |
7 |
Trinity Bay Equipment Holdings, LLC | 244 |
7 |
Airbus Operations GmbH | 3188 |
6 |
Subsea 7 Limited | 208 |
6 |
Allison Transmission, Inc. | 833 |
4 |
ITP SA | 44 |
4 |
Reelwell AS | 67 |
4 |
Tata Steel Nederland Technology BV | 143 |
4 |
Titeflex Corporation | 82 |
4 |
Total SA | 520 |
4 |
Wartsila Finland Oy | 740 |
4 |
Chevron U.S.A. Inc. | 3774 |
3 |
Calsonic Kansei Corporation | 686 |
3 |
Durasystems Barriers, Inc. | 22 |
3 |
Green HVAC Ducts USA, LLC | 4 |
3 |
Other owners | 318 |