- 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: 1165
10-year publication summary
|
136
|
158
|
127
|
110
|
93
|
87
|
99
|
73
|
75
|
46
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Weir Minerals Australia, Ltd. | 307 |
39 |
| KSB SE & Co. KGaA | 699 |
33 |
| Sulzer Management AG | 670 |
30 |
| Ebara Corporation | 2186 |
26 |
| Halliburton Energy Services, Inc. | 20937 |
21 |
| Nuovo Pignone Tecnologie S.r.l. | 994 |
17 |
| Mitsubishi Heavy Industries Compressor Corporation | 634 |
16 |
| Hamilton Sundstrand Corporation | 4906 |
14 |
| KSB Aktiengesellschaft | 162 |
14 |
| Mitsubishi Heavy Industries, Ltd. | 8777 |
13 |
| Pyrotek, Inc. | 200 |
13 |
| PENTAIR Flow Technologies, LLC | 175 |
11 |
| Weir Slurry Group, Inc. | 67 |
11 |
| Grundfos Holding A/S | 560 |
11 |
| Tc1 LLC | 625 |
10 |
| Schlumberger Technology Corporation | 10848 |
9 |
| Jiangsu University | 1107 |
9 |
| Johnson Electric International AG | 373 |
9 |
| Xylem Europe GmbH | 214 |
9 |
| Terumo Kabushiki Kaisha | 5569 |
8 |
| Other owners | 842 |