- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F04D - Non-positive-displacement pumps
- F04D 29/12 - Shaft sealings using sealing-rings
Patent holdings for IPC class F04D 29/12
Total number of patents in this class: 489
10-year publication summary
|
53
|
44
|
48
|
50
|
34
|
34
|
25
|
20
|
17
|
14
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Eagle Industry Co., Ltd. | 1133 |
27 |
| Nuovo Pignone Tecnologie S.r.l. | 1004 |
22 |
| Mitsubishi Heavy Industries Compressor Corporation | 634 |
15 |
| Ebara Corporation | 2189 |
14 |
| Sulzer Management AG | 680 |
14 |
| Rtx Corporation | 9461 |
13 |
| Grundfos Holding A/S | 564 |
12 |
| Mitsubishi Heavy Industries, Ltd. | 8803 |
9 |
| Siemens AG | 24352 |
8 |
| IHI Corporation | 3452 |
8 |
| John Crane UK Limited | 85 |
8 |
| BorgWarner Inc. | 2605 |
7 |
| EagleBurgmann Germany GmbH & Co. KG | 340 |
7 |
| Flowserve Management Company | 195 |
6 |
| Westinghouse Electric Company LLC | 1155 |
6 |
| KSB SE & Co. KGaA | 699 |
6 |
| Aisin Seiki Kabushiki Kaisha | 2223 |
5 |
| KSB Aktiengesellschaft | 162 |
5 |
| Linatex Limited | 39 |
5 |
| Solar Turbines Incorporated | 481 |
5 |
| Other owners | 287 |