- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F01D - Non-positive-displacement machines or engines, e.g. steam turbines
- F01D 5/20 - Specially-shaped blade tips to seal space between tips and stator
Patent holdings for IPC class F01D 5/20
Total number of patents in this class: 708
10-year publication summary
|
50
|
60
|
76
|
65
|
51
|
38
|
31
|
18
|
15
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 9419 |
127 |
| GE Infrastructure Technology, LLC | 6234 |
75 |
| General Electric Company | 13806 |
58 |
| Siemens AG | 24437 |
51 |
| Safran Aircraft Engines | 6297 |
46 |
| Siemens Energy Global GmbH & Co. KG | 2987 |
29 |
| Mitsubishi Heavy Industries, Ltd. | 8764 |
27 |
| United Technologies Corporation | 2242 |
26 |
| Siemens Energy, Inc. | 1711 |
22 |
| Pratt & Whitney Canada Corp. | 4796 |
21 |
| Rolls-Royce PLC | 3109 |
17 |
| Rolls-Royce Corporation | 1739 |
16 |
| SNECMA S.A. | 1148 |
12 |
| Honeywell International Inc. | 13548 |
12 |
| Mitsubishi Hitachi Power Systems, Ltd. | 993 |
11 |
| MTU Aero Engines AG | 687 |
11 |
| Rolls-Royce North American Technologies, Inc. | 1169 |
11 |
| Mitsubishi Power, Ltd. | 1774 |
11 |
| Doosan Heavy Industries & Construction Co., Ltd. | 581 |
10 |
| Snecma | 1064 |
8 |
| Other owners | 107 |