- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F01D - Non-positive-displacement machines or engines, e.g. steam turbines
- F01D 25/18 - Lubricating arrangements
Patent holdings for IPC class F01D 25/18
Total number of patents in this class: 1675
10-year publication summary
|
162
|
119
|
187
|
155
|
117
|
101
|
86
|
78
|
63
|
67
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 9601 |
351 |
| Safran Aircraft Engines | 6410 |
218 |
| Pratt & Whitney Canada Corp. | 4958 |
190 |
| General Electric Company | 13830 |
83 |
| Safran Transmission Systems | 321 |
47 |
| BorgWarner Inc. | 2601 |
45 |
| Rolls-Royce PLC | 3159 |
42 |
| Rolls-Royce Corporation | 1753 |
41 |
| United Technologies Corporation | 2233 |
40 |
| Rolls-Royce Deutschland Ltd & Co KG | 830 |
38 |
| Safran Helicopter Engines | 782 |
34 |
| IHI Corporation | 3471 |
31 |
| Snecma | 1061 |
26 |
| SNECMA S.A. | 1148 |
22 |
| Hamilton Sundstrand Corporation | 4956 |
20 |
| GE Avio S.r.l. | 297 |
18 |
| JPMorgan Chase Bank, National Association | 8755 |
14 |
| Safran Aero Boosters SA | 184 |
14 |
| Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. | 797 |
14 |
| Kawasaki Jukogyo Kabushiki Kaisha (trading as Kawasaki Heavy Industries, Ltd.) | 3108 |
13 |
| Other owners | 374 |