- 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: 1152
10-year publication summary
|
141
|
164
|
151
|
117
|
99
|
91
|
111
|
76
|
76
|
28
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Weir Minerals Australia, Ltd. | 303 |
41 |
| KSB SE & Co. KGaA | 694 |
33 |
| Sulzer Management AG | 656 |
29 |
| Ebara Corporation | 2129 |
26 |
| Halliburton Energy Services, Inc. | 20697 |
21 |
| Nuovo Pignone Tecnologie S.r.l. | 940 |
17 |
| Mitsubishi Heavy Industries Compressor Corporation | 626 |
16 |
| Hamilton Sundstrand Corporation | 4824 |
14 |
| KSB Aktiengesellschaft | 165 |
14 |
| Mitsubishi Heavy Industries, Ltd. | 8616 |
13 |
| Pyrotek, Inc. | 198 |
12 |
| Weir Slurry Group, Inc. | 67 |
11 |
| Grundfos Holding A/S | 551 |
11 |
| PENTAIR Flow Technologies, LLC | 171 |
10 |
| Tc1 LLC | 620 |
10 |
| Schlumberger Technology Corporation | 10597 |
9 |
| Jiangsu University | 1088 |
9 |
| Johnson Electric International AG | 370 |
9 |
| Xylem Europe GmbH | 213 |
9 |
| Terumo Kabushiki Kaisha | 5487 |
8 |
| Other owners | 830 |