- All sections
- B - Performing operationstransporting
- B63H - Marine propulsion or steering
- B63H 3/08 - Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical fluid
Patent holdings for IPC class B63H 3/08
Total number of patents in this class: 37
10-year publication summary
|
3
|
1
|
3
|
3
|
3
|
1
|
1
|
3
|
1
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Berg Propulsion Technology AB | 5 |
3 |
| Caterpillar Propulsion Production AB | 15 |
3 |
| Lockheed Martin Corporation | 3306 |
2 |
| Hamilton Sundstrand Corporation | 4742 |
2 |
| Inpower AS | 2 |
2 |
| MT-Propeller Entwicklung GmbH | 2 |
2 |
| Safran Aircraft Engines | 6078 |
2 |
| Scana Volda AS | 3 |
2 |
| Wärtsilä Netherlands B.V. | 23 |
2 |
| SNECMA S.A. | 1149 |
1 |
| Mitsubishi Heavy Industries, Ltd. | 8550 |
1 |
| Pratt & Whitney Canada Corp. | 4451 |
1 |
| Dai-Ichi Electric Co., Ltd. | 4 |
1 |
| Hyundai Heavy Industries Co., Ltd. | 275 |
1 |
| Ratier-figeac SAS | 182 |
1 |
| Rolls-Royce Marine AS | 71 |
1 |
| VENSYS Energy AG | 10 |
1 |
| Wartsila Norway AS | 10 |
1 |
| Snecma | 1065 |
1 |
| DSK Co., Ltd. | 2 |
1 |
| Other owners | 6 |