- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F04D - Non-positive-displacement pumps
- F04D 29/08 - Sealings
Patent holdings for IPC class F04D 29/08
Total number of patents in this class: 1039
10-year publication summary
|
100
|
128
|
119
|
72
|
64
|
81
|
75
|
52
|
57
|
42
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 9596 |
78 |
| Mitsubishi Heavy Industries Compressor Corporation | 631 |
35 |
| United Technologies Corporation | 2233 |
26 |
| Halliburton Energy Services, Inc. | 21078 |
19 |
| Safran Aircraft Engines | 6404 |
19 |
| General Electric Company | 13840 |
17 |
| Siemens AG | 24333 |
16 |
| Sulzer Management AG | 685 |
16 |
| Schlumberger Technology Corporation | 11054 |
15 |
| Mitsubishi Heavy Industries, Ltd. | 8875 |
15 |
| Grundfos Holding A/S | 569 |
15 |
| Nuovo Pignone Tecnologie S.r.l. | 1046 |
14 |
| Baker Hughes Holdings LLC | 3002 |
13 |
| Robert Bosch GmbH | 43063 |
12 |
| Siemens Energy Global GmbH & Co. KG | 3081 |
12 |
| IHI Corporation | 3467 |
11 |
| MTU Aero Engines AG | 697 |
11 |
| Baker Hughes Oilfield Operations, LLC | 2390 |
11 |
| Nidec Corporation | 2701 |
10 |
| GE Infrastructure Technology, LLC | 6190 |
10 |
| Other owners | 664 |