- 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: 434
10-year publication summary
|
38
|
44
|
43
|
38
|
30
|
20
|
25
|
12
|
38
|
4
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 9761 |
109 |
| Safran Aircraft Engines | 6474 |
63 |
| Pratt & Whitney Canada Corp. | 5059 |
43 |
| General Electric Company | 13776 |
29 |
| Rolls-Royce PLC | 3172 |
22 |
| Rolls-Royce Deutschland Ltd & Co KG | 833 |
20 |
| United Technologies Corporation | 2224 |
15 |
| GE Avio S.r.l. | 310 |
15 |
| Safran Helicopter Engines | 801 |
12 |
| Hamilton Sundstrand Corporation | 5001 |
10 |
| Rolls-Royce Corporation | 1691 |
9 |
| Safran Aero Boosters SA | 184 |
7 |
| Honeywell International Inc. | 13561 |
4 |
| Safran Transmission Systems | 334 |
4 |
| GE Infrastructure Technology, LLC | 6202 |
4 |
| Safran Aero Boosters | 121 |
4 |
| Snecma | 1061 |
4 |
| Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. | 802 |
3 |
| Honda Motor Co., Ltd. | 25773 |
2 |
| SNECMA S.A. | 1148 |
2 |
| Other owners | 53 |