- 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: 1192
10-year publication summary
|
158
|
127
|
110
|
93
|
87
|
99
|
72
|
80
|
65
|
5
|
| 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 |
42 |
| KSB SE & Co. KGaA | 711 |
34 |
| Sulzer Management AG | 689 |
32 |
| Ebara Corporation | 2252 |
27 |
| Halliburton Energy Services, Inc. | 21098 |
24 |
| Nuovo Pignone Tecnologie S.r.l. | 1108 |
19 |
| Mitsubishi Heavy Industries Compressor Corporation | 633 |
16 |
| Hamilton Sundstrand Corporation | 5001 |
14 |
| KSB Aktiengesellschaft | 159 |
14 |
| Mitsubishi Heavy Industries, Ltd. | 8961 |
13 |
| Pyrotek, Inc. | 205 |
13 |
| PENTAIR Flow Technologies, LLC | 173 |
11 |
| Grundfos Holding A/S | 579 |
11 |
| Schlumberger Technology Corporation | 11274 |
10 |
| Weir Slurry Group, Inc. | 63 |
10 |
| Tc1 LLC | 625 |
10 |
| Xylem Europe GmbH | 218 |
10 |
| Jiangsu University | 1140 |
9 |
| Johnson Electric International AG | 375 |
9 |
| Baker Hughes Oilfield Operations, LLC | 2405 |
9 |
| Other owners | 855 |