- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F04B - Positive-displacement machines for liquids; pumps
- F04B 47/14 - Counterbalancing
Patent holdings for IPC class F04B 47/14
Total number of patents in this class: 49
10-year publication summary
4
|
15
|
4
|
8
|
11
|
4
|
7
|
1
|
2
|
1
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Weatherford Technology Holdings, LLC | 2135 |
21 |
Bristol, Inc., d/b/a Remote Automation Solutions | 104 |
3 |
DC Innovations Inc. | 3 |
3 |
SEW-EURODRIVE GmbH & Co. KG | 1816 |
2 |
Ravdos Holdings Inc. | 50 |
2 |
Vertx Artificial Lift Inc. | 2 |
2 |
POC Hydraulic Technologies, LLC | 3 |
2 |
Halliburton Energy Services, Inc. | 20165 |
1 |
Crostek Management Corp. | 4 |
1 |
Flowrox Oy | 10 |
1 |
Guidemaster Manufacturing Corp. | 1 |
1 |
Mcnichol, Richard Frederick | 3 |
1 |
Richard Frederick McNichol | 2 |
1 |
Saudi Arabian Oil Company | 11322 |
1 |
Apex Oilfield Equipment (QingDao) Co., Ltd. | 13 |
1 |
Dimaco S.A.S. di Marrale Carmelo & C. | 2 |
1 |
Liu, Yanan | 1 |
1 |
Wang, Dawei | 2 |
1 |
Silver Energy Services, LLC | 2 |
1 |
Silverjack Artificial Lift, Inc. | 5 |
1 |
Other owners | 1 |