- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F04B - Positive-displacement machines for liquidspumps
- 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: 29
10-year publication summary
|
3
|
5
|
3
|
1
|
0
|
2
|
1
|
1
|
4
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Active Products Inc. | 26 |
6 |
| Kawasaki Heavy Industries, Limited | 1717 |
3 |
| Robert Bosch GmbH | 44445 |
2 |
| Schlumberger Canada Limited | 7629 |
1 |
| Schlumberger Technology B.v. | 5292 |
1 |
| Schlumberger Holdings Limited | 2653 |
1 |
| Caterpillar Inc. | 10375 |
1 |
| Toyota Industries Corporation | 1247 |
1 |
| Ameriforge Group Inc. | 36 |
1 |
| Jiangsu Hengli Hydraulic Co., Ltd | 26 |
1 |
| MAHLE International GmbH | 2934 |
1 |
| Prad Research and Development Limited | 2639 |
1 |
| Putzmeister Engineering GmbH | 365 |
1 |
| RareCyte, Inc. | 155 |
1 |
| Safran Aircraft Engines | 6824 |
1 |
| Sauer-Danfoss ApS | 16 |
1 |
| Services Petroliers Schlumberger | 6036 |
1 |
| Jiangsu Hengli Hydraulic Technology Co., Ltd. | 11 |
1 |
| Regetns of the University of Minnesota | 1 |
1 |
| Briggs & Stratton, LLC | 685 |
1 |
| Other owners | 1 |