- 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: 429
10-year publication summary
|
43
|
38
|
44
|
43
|
38
|
30
|
20
|
25
|
12
|
35
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 9601 |
107 |
| Safran Aircraft Engines | 6410 |
60 |
| Pratt & Whitney Canada Corp. | 4958 |
43 |
| General Electric Company | 13830 |
29 |
| Rolls-Royce PLC | 3159 |
24 |
| Rolls-Royce Deutschland Ltd & Co KG | 830 |
21 |
| United Technologies Corporation | 2233 |
15 |
| GE Avio S.r.l. | 297 |
13 |
| Rolls-Royce Corporation | 1753 |
11 |
| Hamilton Sundstrand Corporation | 4956 |
10 |
| Safran Helicopter Engines | 782 |
9 |
| Safran Aero Boosters SA | 184 |
7 |
| Honeywell International Inc. | 13571 |
4 |
| Safran Transmission Systems | 321 |
4 |
| GE Infrastructure Technology, LLC | 6197 |
4 |
| Safran Aero Boosters | 116 |
4 |
| Snecma | 1061 |
4 |
| Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. | 797 |
3 |
| Honda Motor Co., Ltd. | 25784 |
2 |
| SNECMA S.A. | 1148 |
2 |
| Other owners | 53 |