- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F28F - Details of heat-exchange or heat-transfer apparatus, of general application
- F28F 11/02 - Arrangements for sealing leaky tubes or conduits using obturating elements, e.g. washers, inserted and operated independently of each other
Patent holdings for IPC class F28F 11/02
Total number of patents in this class: 43
10-year publication summary
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4
|
2
|
1
|
2
|
1
|
5
|
5
|
1
|
1
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Saudi Arabian Oil Company | 14235 |
10 |
| JNT Technical Services, Inc. | 19 |
6 |
| Aramco Services Company | 4195 |
4 |
| EST Group, Inc. | 23 |
4 |
| Mitsubishi Heavy Industries, Ltd. | 9128 |
2 |
| Alfa Laval Olmi S.p.A | 22 |
2 |
| Tetra Laval Holdings & Finance S.A. | 2231 |
2 |
| Westinghouse Electric Company LLC | 1192 |
2 |
| The Boeing Company | 20160 |
1 |
| Areva NP | 201 |
1 |
| Bekaert Combustion Technology B.V. | 61 |
1 |
| BorgWarner Emissions Systems Spain, S.L.U. | 34 |
1 |
| Danfoss Micro Channel Heat Exchanger (Jiaxing) Co. Ltd. | 89 |
1 |
| Eco Factory Co., Ltd. | 24 |
1 |
| Westinghouse Electric Germany GmbH | 18 |
1 |
| Belleli Energy CPE S.p.A. | 3 |
1 |
| The Challenge Petrochemical Machinery Corporation of Maoming | 2 |
1 |
| Yangzhou Panstar Heat-exchange Equipment Co. Ltd | 2 |
1 |
| Viking Vessel Holdings, LLC | 4 |
1 |
| Other owners | 0 |