- 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 9/153 - Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and concrete with or without reinforcement
Patent holdings for IPC class F16L 9/153
Total number of patents in this class: 21
10-year publication summary
|
1
|
7
|
3
|
2
|
0
|
0
|
1
|
1
|
3
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mekorot Water Company, Ltd | 24 |
2 |
| Nanjing Lianzhong Construction Engineering Technology Co., Ltd. | 18 |
2 |
| Next Composite Solutions, Inc. | 2 |
2 |
| NGK Insulators, Ltd. | 4589 |
1 |
| Tsinghua University | 5426 |
1 |
| Duktus Rohrsysteme Wetzlar GmbH | 7 |
1 |
| Forterra Pipe & Precast, LLC | 16 |
1 |
| Freyssinet International (STUP) | 16 |
1 |
| Hawkeyepedershaab Concrete Technologies, Inc. | 28 |
1 |
| IFP Energies Nouvelles | 2717 |
1 |
| Linde Aktiengesellschaft | 1600 |
1 |
| NGK Adrec Co., Ltd. | 23 |
1 |
| ShawCor Ltd. | 79 |
1 |
| TDF | 106 |
1 |
| Brugg Rohrsysteme GmbH | 3 |
1 |
| FINDLAY, Jessie | 1 |
1 |
| Tianjin Waterline Pipeline Engineering Co., Ltd | 1 |
1 |
| Zibo Environmental Protection Technology Co., Ltd. | 83 |
1 |
| Other owners | 0 |