- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F04F - Pumping of fluid by direct contact of another fluid or by using inertia of fluid to be pumped; siphons
- F04F 13/00 - Pressure exchangers
Patent holdings for IPC class F04F 13/00
Total number of patents in this class: 269
10-year publication summary
|
45
|
26
|
25
|
10
|
30
|
23
|
15
|
24
|
20
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Energy Recovery, Inc. | 175 |
106 |
| Flowserve Pte. Ltd | 369 |
18 |
| Schlumberger Technology Corporation | 10228 |
14 |
| Flowserve Management Company | 203 |
9 |
| Schlumberger Canada Limited | 7143 |
7 |
| Schlumberger Technology B.v. | 5064 |
7 |
| Isobaric Strategies Inc. | 9 |
7 |
| Services Petroliers Schlumberger | 5622 |
7 |
| Danfoss A/S | 1306 |
6 |
| MEC Lasertec AG | 6 |
5 |
| Poclain Hydraulics Industrie | 234 |
5 |
| 3prex AG | 8 |
5 |
| Saltpower Holding ApS | 17 |
5 |
| Kubota Corporation | 3477 |
4 |
| Weir Minerals Netherlands B.V. | 49 |
4 |
| Arkling Limited | 7 |
3 |
| Atlas Copco Airpower, naamloze vennootschap | 982 |
3 |
| Benteler Automobiltechnik GmbH | 266 |
3 |
| Fluid Equipment Development Company, LLC | 86 |
3 |
| Antrova AG | 4 |
2 |
| Other owners | 46 |