- All sections
- B - Performing operationstransporting
- B63H - Marine propulsion or steering
- B63H 23/30 - Transmitting power from propulsion power plant to propulsive elements characterised by use of clutches
Patent holdings for IPC class B63H 23/30
Total number of patents in this class: 157
10-year publication summary
|
14
|
15
|
19
|
11
|
14
|
15
|
20
|
9
|
10
|
7
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Yamaha Motor Co., Ltd. | 2815 |
16 |
| AB Volvo Penta | 84 |
15 |
| Brunswick Corporation | 1366 |
14 |
| Yanmar Co., Ltd. | 1404 |
12 |
| Suzuki Motor Corporation | 1313 |
11 |
| ZF Friedrichshafen AG | 7149 |
6 |
| Caterpillar Inc. | 9558 |
5 |
| IHI Power Systems Co., Ltd. | 30 |
5 |
| Kanzaki Kokyukoki Manufacturing Co., Ltd. | 9 |
4 |
| Volvo Penta Corporation | 141 |
4 |
| Yanmar Power Technology Co., Ltd. | 580 |
4 |
| Honda Motor Co., Ltd. | 25301 |
3 |
| Mitsubishi Heavy Industries, Ltd. | 8735 |
3 |
| Johnson Outdoors Inc. | 212 |
3 |
| Niigata Power Systems Co., Ltd. | 12 |
3 |
| Samsung Heavy Ind. Co., Ltd. | 238 |
3 |
| Gibbs Technologies Ltd | 94 |
2 |
| Logan Clutch Corporation | 33 |
2 |
| Michigan Marine Propulsion Systems, LLC | 2 |
2 |
| ZF PADOVA S.r.l. | 28 |
2 |
| Other owners | 38 |