- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F04B - Positive-displacement machines for liquids; pumps
- 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: 666
10-year publication summary
|
71
|
76
|
84
|
76
|
60
|
82
|
50
|
61
|
37
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| US Well Services LLC | 224 |
44 |
| Caterpillar Inc. | 9149 |
17 |
| Weatherford Technology Holdings, LLC | 2107 |
16 |
| BJ Energy Solutions, LLC (formerly TES Asset Acquisition, LLC) | 207 |
16 |
| Graco Minnesota Inc. | 1162 |
12 |
| Knorr-Bremse Systeme fur Schienenfahrzeuge GmbH | 568 |
12 |
| Nordson Corporation | 1207 |
12 |
| Pentair Water Pool and Spa, Inc. | 451 |
12 |
| Robert Bosch GmbH | 41695 |
11 |
| Copeland LP | 673 |
11 |
| Atlas Copco Airpower, naamloze vennootschap | 980 |
10 |
| Fluid Handling LLC | 242 |
8 |
| Trane International Inc. | 1147 |
8 |
| Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. | 426 |
8 |
| Typhon Technology Solutions (U.S.), LLC | 86 |
8 |
| LG Electronics Inc. | 70831 |
7 |
| Hyundai Motor Company | 20356 |
7 |
| Hitachi Industrial Equipment Systems Co., Ltd. | 1400 |
7 |
| Repligen Corporation | 259 |
7 |
| Kia Motors Corporation | 7779 |
6 |
| Other owners | 427 |