- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16L - Pipesjoints or fittings for pipessupports for pipes, cables or protective tubingmeans for thermal insulation in general
- F16L 58/18 - Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings
Patent holdings for IPC class F16L 58/18
Total number of patents in this class: 401
10-year publication summary
|
45
|
30
|
30
|
28
|
21
|
21
|
23
|
24
|
12
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Vallourec Oil and Gas France | 454 |
24 |
| Saipem S.p.A. | 517 |
21 |
| Nippon Steel Corporation | 6593 |
19 |
| Subsea 7 Limited | 226 |
14 |
| Pioneer Lining Technology Limited | 28 |
11 |
| Saipem S.A. | 231 |
9 |
| Saudi Arabian Oil Company | 13839 |
8 |
| Acergy France SAS | 132 |
7 |
| Pipeline Induction Heat Limited | 25 |
7 |
| Lindsay Corporation | 244 |
6 |
| National Oilwell Varco, L.P. | 1702 |
6 |
| 2543500 Alberta Ltd B.d.a. Shaw Pipe Protection | 14 |
6 |
| Bluemarine Offshore Yard Service B.V. | 16 |
5 |
| Sanoh Industrial Co., Ltd. | 213 |
5 |
| H. BUTTING GmbH & Co. KG | 21 |
4 |
| Heerema Marine Contractors Nederland SE | 60 |
4 |
| Technip France | 694 |
4 |
| Tenaris Connections B.V. | 185 |
4 |
| Winn & Coales International Limited | 57 |
4 |
| 2543500 Alberta Ltd. | 28 |
4 |
| Other owners | 229 |