- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F04D - Non-positive-displacement pumps
- F04D 29/053 - Shafts
Patent holdings for IPC class F04D 29/053
Total number of patents in this class: 450
10-year publication summary
|
38
|
74
|
116
|
91
|
47
|
43
|
42
|
42
|
28
|
6
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 8674 |
32 |
| LG Electronics Inc. | 69257 |
18 |
| BorgWarner Inc. | 2604 |
18 |
| Mitsubishi Heavy Industries Compressor Corporation | 613 |
13 |
| IHI Corporation | 3268 |
12 |
| Delta Electronics, Inc. | 2401 |
11 |
| Hamilton Sundstrand Corporation | 4525 |
9 |
| Safran Aircraft Engines | 5739 |
9 |
| Nuovo Pignone Tecnologie S.r.l. | 789 |
9 |
| Siemens Energy Global GmbH & Co. KG | 2775 |
9 |
| General Electric Company | 18133 |
8 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
6 |
| Robert Bosch GmbH | 40953 |
6 |
| Edwards Japan Limited | 376 |
6 |
| Fisher & Paykel Healthcare Limited | 2218 |
6 |
| Siemens AG | 24990 |
5 |
| Rolls-Royce PLC | 2944 |
5 |
| GREE Electric Appliances, Inc. of Zhuhai | 3007 |
5 |
| Solar Turbines Incorporated | 452 |
5 |
| Pratt & Whitney Canada Corp. | 4215 |
4 |
| Other owners | 254 |