- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F04D - Non-positive-displacement pumps
- F04D 31/00 - Pumping liquids and elastic fluids at the same time
Patent holdings for IPC class F04D 31/00
Total number of patents in this class: 238
10-year publication summary
|
33
|
20
|
23
|
16
|
12
|
8
|
17
|
10
|
5
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sulzer Management AG | 660 |
17 |
| Nuovo Pignone Tecnologie S.r.l. | 950 |
16 |
| General Electric Company | 13830 |
13 |
| Statoil Petroleum AS | 518 |
11 |
| FMC Technologies, Inc. | 600 |
8 |
| Equinor Energy AS | 490 |
8 |
| Carnot Compression Inc. | 14 |
8 |
| Halliburton Energy Services, Inc. | 20769 |
6 |
| ExxonMobil Upstream Research Company | 2411 |
6 |
| IFP Energies Nouvelles | 2915 |
5 |
| Rtx Corporation | 9313 |
5 |
| Pratt & Whitney Canada Corp. | 4629 |
4 |
| Aker Subsea AS | 130 |
4 |
| FMC Kongsberg Subsea AS | 252 |
4 |
| MTD Products Inc | 650 |
4 |
| OneSubsea IP UK Limited | 419 |
4 |
| GE Infrastructure Technology, LLC | 6196 |
4 |
| Honeywell International Inc. | 13562 |
3 |
| Alfa Laval Corporate AB | 1305 |
3 |
| Concepts Nrec, LLC | 57 |
3 |
| Other owners | 102 |