- All sections
- G - Physics
- G01N - Investigating or analysing materials by determining their chemical or physical properties
- G01N 9/34 - Investigating density or specific gravity of materialsAnalysing materials by determining density or specific gravity by using flow properties of fluids, e.g. flow through tubes or apertures by using elements moving through the fluid, e.g. vane
Patent holdings for IPC class G01N 9/34
Total number of patents in this class: 30
10-year publication summary
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1
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2
|
1
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2
|
1
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0
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3
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0
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4
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1
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Micro Motion, Inc. | 1018 |
3 |
| The Regents of the University of California | 20534 |
2 |
| Rheonics GmbH | 18 |
2 |
| Red Meters LLC | 6 |
2 |
| Baker Hughes Oilfield Operations, LLC | 2439 |
2 |
| Schlumberger Technology Corporation | 11483 |
1 |
| ExxonMobil Research And Engineering Company | 2468 |
1 |
| Continental Automotive GmbH | 4623 |
1 |
| Seiko Instruments Inc. | 462 |
1 |
| Thermo Fisher Scientific Inc. | 208 |
1 |
| Anton Paar GmbH | 187 |
1 |
| Cidra Corporate Services, Inc. | 202 |
1 |
| Endress + Hauser Flowtec AG | 604 |
1 |
| Endress + Hauser GmbH + Co. KG | 160 |
1 |
| Endress+Hauser Flowtec AG | 821 |
1 |
| National Oilwell Varco, L.P. | 1690 |
1 |
| Rosemount Aerospace Inc. | 785 |
1 |
| Truedyne Sensors AG | 38 |
1 |
| Vega Grieshaber KG | 760 |
1 |
| Eralytics GmbH | 3 |
1 |
| Other owners | 4 |