- 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: 236
10-year publication summary
|
29
|
19
|
20
|
16
|
10
|
8
|
16
|
9
|
5
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sulzer Management AG | 667 |
17 |
| Nuovo Pignone Tecnologie S.r.l. | 981 |
16 |
| General Electric Company | 13810 |
13 |
| Statoil Petroleum AS | 524 |
11 |
| FMC Technologies, Inc. | 609 |
8 |
| Equinor Energy AS | 498 |
8 |
| Carnot Compression Inc. | 14 |
8 |
| Halliburton Energy Services, Inc. | 20911 |
6 |
| ExxonMobil Upstream Research Company | 2396 |
6 |
| IFP Energies Nouvelles | 2937 |
5 |
| Rtx Corporation | 9410 |
5 |
| Pratt & Whitney Canada Corp. | 4793 |
4 |
| Aker Subsea AS | 129 |
4 |
| MTD Products Inc | 659 |
4 |
| OneSubsea IP UK Limited | 421 |
4 |
| GE Infrastructure Technology, LLC | 6233 |
4 |
| Honeywell International Inc. | 13540 |
3 |
| Alfa Laval Corporate AB | 1315 |
3 |
| Concepts Nrec, LLC | 57 |
3 |
| Nuovo Pignone S.p.A. | 89 |
3 |
| Other owners | 101 |