- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F04B - Positive-displacement machines for liquidspumps
- F04B 49/20 - Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups by changing the driving speed
Patent holdings for IPC class F04B 49/20
Total number of patents in this class: 727
10-year publication summary
|
73
|
80
|
68
|
53
|
81
|
52
|
62
|
43
|
47
|
15
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| US Well Services LLC | 224 |
42 |
| Caterpillar Inc. | 10132 |
18 |
| Weatherford Technology Holdings, LLC | 2065 |
16 |
| BJ Energy Solutions, LLC (formerly TES Asset Acquisition, LLC) | 228 |
16 |
| Atlas Copco Airpower, naamloze vennootschap | 1063 |
15 |
| Robert Bosch GmbH | 43587 |
12 |
| Graco Minnesota Inc. | 1254 |
12 |
| Nordson Corporation | 1198 |
12 |
| Knorr-Bremse Systeme fur Schienenfahrzeuge GmbH | 570 |
11 |
| Copeland LP | 694 |
11 |
| Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. | 467 |
10 |
| LG Electronics Inc. | 74968 |
9 |
| Hitachi Industrial Equipment Systems Co., Ltd. | 1519 |
9 |
| Fluid Handling LLC | 256 |
8 |
| Trane International Inc. | 1214 |
8 |
| Typhon Technology Solutions (U.S.), LLC | 101 |
8 |
| Halliburton Energy Services, Inc. | 21194 |
7 |
| Hyundai Motor Company | 23762 |
7 |
| Kia Motors Corporation | 7723 |
6 |
| Lennox Industries Inc. | 1084 |
6 |
| Other owners | 484 |