- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F04D - Non-positive-displacement pumps
- F04D 29/10 - Shaft sealings
Patent holdings for IPC class F04D 29/10
Total number of patents in this class: 623
10-year publication summary
|
53
|
89
|
75
|
71
|
51
|
37
|
50
|
38
|
25
|
10
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Heavy Industries Compressor Corporation | 613 |
29 |
| Nuovo Pignone Tecnologie S.r.l. | 789 |
21 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
18 |
| Siemens AG | 24990 |
15 |
| Rtx Corporation | 8674 |
12 |
| Nidec GPM GmbH | 152 |
11 |
| Grundfos Holding A/S | 506 |
11 |
| Valeo Systemes de Controle Moteur | 614 |
10 |
| Robert Bosch GmbH | 40953 |
9 |
| Ebara Corporation | 1951 |
9 |
| BorgWarner Inc. | 2604 |
9 |
| Dresser-Rand Company | 233 |
8 |
| Weir Minerals Australia, Ltd. | 309 |
8 |
| Halliburton Energy Services, Inc. | 20165 |
7 |
| Hamilton Sundstrand Corporation | 4525 |
7 |
| Toyota Industries Corporation | 1010 |
7 |
| Eagle Industry Co., Ltd. | 1062 |
7 |
| IHI Corporation | 3268 |
7 |
| Sulzer Management AG | 613 |
7 |
| Baker Hughes Oilfield Operations, LLC | 1885 |
7 |
| Other owners | 404 |