- All sections
- G - Physics
- G01F - Measuring volume, volume flow, mass flow, or liquid level; metering by volume
- G01F 1/44 - Venturi tubes
Patent holdings for IPC class G01F 1/44
Total number of patents in this class: 280
10-year publication summary
|
19
|
21
|
17
|
22
|
28
|
17
|
13
|
18
|
12
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Schlumberger Technology Corporation | 9690 |
23 |
| Saudi Arabian Oil Company | 11322 |
21 |
| Schlumberger Canada Limited | 6913 |
11 |
| Schlumberger Technology B.v. | 4951 |
9 |
| Services Petroliers Schlumberger | 5426 |
9 |
| Schlumberger Holdings Limited | 2947 |
7 |
| Aramco Services Company | 3504 |
7 |
| Baker Hughes Incorporated | 5689 |
6 |
| Prad Research and Development Limited | 2696 |
6 |
| Rosemount Inc. | 1212 |
6 |
| Weatherford Technology Holdings, LLC | 2135 |
5 |
| FMC Kongsberg Subsea AS | 251 |
5 |
| Griswold Controls, LLC | 26 |
4 |
| Hydroacoustics Inc. | 11 |
4 |
| OneSubsea IP UK Limited | 378 |
4 |
| HealthUp Sp. z o.o. | 6 |
4 |
| Kennametal Inc. | 1380 |
3 |
| Breas Medical AB | 38 |
3 |
| Dieterich Standard, Inc. | 63 |
3 |
| Halliburton Energy Services, Inc. | 20165 |
2 |
| Other owners | 138 |