- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- 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: 1563
10-year publication summary
|
137
|
175
|
150
|
202
|
162
|
137
|
112
|
98
|
87
|
16
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 8674 |
338 |
| Safran Aircraft Engines | 5739 |
185 |
| Pratt & Whitney Canada Corp. | 4215 |
157 |
| General Electric Company | 18133 |
76 |
| BorgWarner Inc. | 2604 |
47 |
| United Technologies Corporation | 2328 |
43 |
| Rolls-Royce PLC | 2944 |
41 |
| Rolls-Royce Corporation | 1686 |
41 |
| Rolls-Royce Deutschland Ltd & Co KG | 765 |
39 |
| Safran Transmission Systems | 260 |
38 |
| IHI Corporation | 3268 |
31 |
| Snecma | 1065 |
26 |
| SNECMA S.A. | 1160 |
22 |
| Safran Helicopter Engines | 676 |
22 |
| Hamilton Sundstrand Corporation | 4525 |
20 |
| GE Avio S.r.l. | 223 |
17 |
| JPMorgan Chase Bank, National Association | 10964 |
14 |
| Safran Aero Boosters SA | 180 |
14 |
| Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. | 699 |
14 |
| Kawasaki Jukogyo Kabushiki Kaisha (trading as Kawasaki Heavy Industries, Ltd.) | 2856 |
13 |
| Other owners | 365 |