- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F01D - Non-positive-displacement machines or engines, e.g. steam turbines
- F01D 25/20 - Lubricating arrangements using lubrication pumps
Patent holdings for IPC class F01D 25/20
Total number of patents in this class: 455
10-year publication summary
|
42
|
46
|
46
|
40
|
34
|
22
|
28
|
12
|
41
|
25
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 10127 |
111 |
| Safran Aircraft Engines | 6727 |
64 |
| Pratt & Whitney Canada Corp. | 5517 |
50 |
| General Electric Company | 13915 |
33 |
| Rolls-Royce PLC | 3224 |
22 |
| Rolls-Royce Deutschland Ltd & Co KG | 863 |
20 |
| GE Avio S.r.l. | 336 |
17 |
| United Technologies Corporation | 2218 |
15 |
| Safran Helicopter Engines | 847 |
12 |
| Hamilton Sundstrand Corporation | 5014 |
10 |
| Rolls-Royce Corporation | 1680 |
9 |
| Safran Aero Boosters SA | 185 |
7 |
| Safran Transmission Systems | 378 |
6 |
| Honeywell International Inc. | 12776 |
4 |
| GE Infrastructure Technology, LLC | 6159 |
4 |
| Safran Aero Boosters | 133 |
4 |
| Snecma | 1058 |
4 |
| Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. | 847 |
3 |
| Nuovo Pignone Tecnologie S.r.l. | 1223 |
3 |
| Honda Motor Co., Ltd. | 26105 |
2 |
| Other owners | 55 |