- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- 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: 716
10-year publication summary
71
|
54
|
68
|
77
|
73
|
54
|
38
|
34
|
17
|
6
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Rtx Corporation | 8674 |
128 |
GE Infrastructure Technology, LLC | 5873 |
73 |
General Electric Company | 18133 |
58 |
Siemens AG | 24990 |
53 |
Safran Aircraft Engines | 5739 |
46 |
Mitsubishi Heavy Industries, Ltd. | 8217 |
28 |
Siemens Energy Global GmbH & Co. KG | 2775 |
28 |
United Technologies Corporation | 2328 |
26 |
Siemens Energy, Inc. | 1770 |
25 |
Rolls-Royce PLC | 2944 |
20 |
Pratt & Whitney Canada Corp. | 4215 |
19 |
Rolls-Royce Corporation | 1686 |
17 |
SNECMA S.A. | 1160 |
13 |
Honeywell International Inc. | 13799 |
12 |
Mitsubishi Hitachi Power Systems, Ltd. | 999 |
11 |
MTU Aero Engines AG | 622 |
11 |
Rolls-Royce North American Technologies, Inc. | 1079 |
11 |
Mitsubishi Power, Ltd. | 1680 |
11 |
Doosan Heavy Industries & Construction Co., Ltd. | 604 |
10 |
Snecma | 1065 |
8 |
Other owners | 108 |