- All sections
- B - Performing operationstransporting
- B63H - Marine propulsion or steering
- B63H 21/32 - Arrangements of propulsion power-unit exhaust uptakesFunnels peculiar to vessels
Patent holdings for IPC class B63H 21/32
Total number of patents in this class: 257
10-year publication summary
|
26
|
25
|
20
|
15
|
10
|
26
|
15
|
14
|
18
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Brunswick Corporation | 1433 |
23 |
| Yamaha Motor Co., Ltd. | 2818 |
19 |
| Fuji Electric Co., Ltd. | 5327 |
18 |
| Mitsubishi Shipbuilding Co., Ltd. | 178 |
17 |
| Mitsubishi Heavy Industries, Ltd. | 8964 |
16 |
| Tennessee Propulsion Products, LLC | 31 |
9 |
| Marathon Petroleum Company LP | 394 |
8 |
| Wartsila Finland Oy | 746 |
7 |
| STAX Engineering, Inc. | 12 |
7 |
| Mitsubishi Hitachi Power Systems, Ltd. | 991 |
6 |
| Yanmar Co., Ltd. | 1381 |
5 |
| Japan Engine Corporation | 72 |
5 |
| Magic Leap, Inc. | 3350 |
4 |
| Kawasaki Jukogyo Kabushiki Kaisha (trading as Kawasaki Heavy Industries, Ltd.) | 3147 |
4 |
| Yanmar Power Technology Co., Ltd. | 581 |
4 |
| HD Hyundai Heavy Industries Co., Ltd. | 71 |
4 |
| AB Volvo Penta | 82 |
3 |
| Hyundai Heavy Industries Co., Ltd. | 274 |
3 |
| Juliet Marine Systems, Inc. | 14 |
3 |
| Kwang Sung Co., Ltd. | 8 |
3 |
| Other owners | 89 |