- All sections
- B - Performing operations; transporting
- B63H - Marine propulsion or steering
- B63H 21/20 - Use of propulsion power plant or units on vessels the vessels being powered by combinations of different types of propulsion units
Patent holdings for IPC class B63H 21/20
Total number of patents in this class: 272
10-year publication summary
|
20
|
11
|
18
|
22
|
23
|
22
|
32
|
34
|
24
|
8
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Yamaha Motor Co., Ltd. | 2740 |
24 |
| Falcon Power, LLC | 29 |
13 |
| Brunswick Corporation | 1271 |
9 |
| Kawasaki Jukogyo Kabushiki Kaisha (trading as Kawasaki Heavy Industries, Ltd.) | 2856 |
9 |
| Siemens AG | 24990 |
8 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
7 |
| Suzuki Motor Corporation | 1266 |
6 |
| Wartsila Finland Oy | 740 |
5 |
| Perkins Engines Company Limited | 279 |
4 |
| Rolls-Royce PLC | 2944 |
4 |
| Daewoo Shipbuilding & Marine Engineering Co., Ltd. | 236 |
4 |
| Volvo Penta Corporation | 91 |
4 |
| Yanmar Power Technology Co., Ltd. | 599 |
4 |
| ZF Friedrichshafen AG | 6820 |
3 |
| Kawasaki Heavy Industries, Limited | 1524 |
3 |
| Jackson Kayak, Inc. | 13 |
3 |
| Juliet Marine Systems, Inc. | 14 |
3 |
| Niigata Power Systems Co., Ltd. | 12 |
3 |
| Schottel GmbH | 52 |
3 |
| Sideshift Inc. | 13 |
3 |
| Other owners | 150 |