- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F04B - Positive-displacement machines for liquids; pumps
- F04B 1/28 - Control of machines or pumps with stationary cylinders
Patent holdings for IPC class F04B 1/28
Total number of patents in this class: 23
10-year publication summary
|
1
|
3
|
5
|
3
|
1
|
0
|
2
|
1
|
0
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Active Products Inc. | 21 |
5 |
| Robert Bosch GmbH | 41786 |
2 |
| Schlumberger Canada Limited | 7154 |
1 |
| Schlumberger Technology B.v. | 5075 |
1 |
| Schlumberger Holdings Limited | 2867 |
1 |
| Caterpillar Inc. | 9166 |
1 |
| Toyota Industries Corporation | 1057 |
1 |
| Ameriforge Group Inc. | 40 |
1 |
| Brueninghaus Hydromatik GmbH | 37 |
1 |
| MAHLE International GmbH | 2705 |
1 |
| Prad Research and Development Limited | 2696 |
1 |
| Putzmeister Engineering GmbH | 337 |
1 |
| RareCyte, Inc. | 155 |
1 |
| Sauer-Danfoss ApS | 25 |
1 |
| Services Petroliers Schlumberger | 5633 |
1 |
| Regetns of the University of Minnesota | 1 |
1 |
| Briggs & Stratton, LLC | 660 |
1 |
| Poisedon Fluid Power, LLC | 1 |
1 |
| Other owners | 0 |