- 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 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: 390
10-year publication summary
|
38
|
51
|
47
|
33
|
33
|
30
|
23
|
21
|
28
|
14
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Steel Corporation | 5649 |
23 |
| Vallourec Oil and Gas France | 450 |
23 |
| Saipem S.p.A. | 513 |
22 |
| Subsea 7 Limited | 208 |
14 |
| Pioneer Lining Technology Limited | 32 |
11 |
| Saipem S.A. | 223 |
9 |
| Acergy France SAS | 124 |
7 |
| Pipeline Induction Heat Limited | 28 |
7 |
| Borealis AG | 2558 |
6 |
| Lindsay Corporation | 229 |
6 |
| National Oilwell Varco, L.P. | 1604 |
6 |
| Saudi Arabian Oil Company | 11322 |
6 |
| Tenaris Connections B.V. | 171 |
6 |
| 2543500 Alberta Ltd B.d.a. Shaw Pipe Protection | 15 |
6 |
| Bluemarine Offshore Yard Service B.V. | 19 |
5 |
| Heerema Marine Contractors Nederland SE | 58 |
5 |
| Sanoh Industrial Co., Ltd. | 189 |
5 |
| H. BUTTING GmbH & Co. KG | 18 |
4 |
| Technip France | 737 |
4 |
| Vallourec Mannesmann Oil & Gas France | 66 |
4 |
| Other owners | 211 |