- All sections
- G - Physics
- G01F - Measuring volume, volume flow, mass flow, or liquid levelmetering by volume
- G01F 1/44 - Venturi tubes
Patent holdings for IPC class G01F 1/44
Total number of patents in this class: 284
10-year publication summary
|
21
|
17
|
22
|
28
|
18
|
13
|
20
|
13
|
11
|
5
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Schlumberger Technology Corporation | 10717 |
26 |
| Saudi Arabian Oil Company | 13155 |
25 |
| Schlumberger Canada Limited | 7296 |
11 |
| Schlumberger Technology B.v. | 5168 |
9 |
| Services Petroliers Schlumberger | 5788 |
9 |
| Aramco Services Company | 3969 |
8 |
| Schlumberger Holdings Limited | 2828 |
6 |
| Hydroacoustics Inc. | 15 |
6 |
| Prad Research and Development Limited | 2693 |
6 |
| Rosemount Inc. | 1192 |
6 |
| Weatherford Technology Holdings, LLC | 2023 |
5 |
| FMC Kongsberg Subsea AS | 187 |
5 |
| Baker Hughes Incorporated | 5247 |
4 |
| Griswold Controls, LLC | 27 |
4 |
| OneSubsea IP UK Limited | 419 |
4 |
| HealthUp Sp. z o.o. | 6 |
4 |
| Breas Medical AB | 52 |
3 |
| Dieterich Standard, Inc. | 63 |
3 |
| Halliburton Energy Services, Inc. | 20891 |
2 |
| Honeywell International Inc. | 13545 |
2 |
| Other owners | 136 |