- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F04D - Non-positive-displacement pumps
- F04D 29/22 - Rotors specially for centrifugal pumps
Patent holdings for IPC class F04D 29/22
Total number of patents in this class: 1226
10-year publication summary
|
164
|
151
|
117
|
99
|
91
|
111
|
76
|
88
|
67
|
43
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Weir Minerals Australia, Ltd. | 310 |
44 |
| KSB SE & Co. KGaA | 738 |
38 |
| Sulzer Management AG | 712 |
31 |
| Ebara Corporation | 2335 |
30 |
| Halliburton Energy Services, Inc. | 21305 |
24 |
| Nuovo Pignone Tecnologie S.r.l. | 1219 |
19 |
| Mitsubishi Heavy Industries Compressor Corporation | 645 |
16 |
| Hamilton Sundstrand Corporation | 5013 |
14 |
| KSB Aktiengesellschaft | 154 |
14 |
| Pyrotek, Inc. | 207 |
14 |
| Mitsubishi Heavy Industries, Ltd. | 9152 |
13 |
| Jiangsu University | 1171 |
11 |
| PENTAIR Flow Technologies, LLC | 176 |
11 |
| Grundfos Holding A/S | 607 |
11 |
| Schlumberger Technology Corporation | 11839 |
10 |
| Weir Slurry Group, Inc. | 62 |
10 |
| Johnson Electric International AG | 379 |
10 |
| Tc1 LLC | 629 |
10 |
| Xylem Europe GmbH | 224 |
10 |
| Coavis | 87 |
9 |
| Other owners | 877 |