- All sections
- G - Physics
- G01N - Investigating or analysing materials by determining their chemical or physical properties
- G01N 9/04 - Investigating density or specific gravity of materialsAnalysing materials by determining density or specific gravity by measuring weight of a known volume of fluids
Patent holdings for IPC class G01N 9/04
Total number of patents in this class: 52
10-year publication summary
|
6
|
3
|
4
|
2
|
6
|
4
|
4
|
6
|
1
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21217 |
4 |
| Validere Technologies Inc. | 18 |
4 |
| Red Meters LLC | 6 |
3 |
| Schlumberger Canada Limited | 7558 |
2 |
| Saudi Arabian Oil Company | 13953 |
2 |
| Shanghai Institute of Ceramics, Chinese Academy of Sciences | 163 |
2 |
| General Electric Company | 13806 |
1 |
| Schlumberger Technology Corporation | 11485 |
1 |
| Schlumberger Technology B.v. | 5267 |
1 |
| Schlumberger Holdings Limited | 2735 |
1 |
| Toyota Motor Corporation | 34698 |
1 |
| Mitsubishi Heavy Industries, Ltd. | 9023 |
1 |
| Robert Bosch GmbH | 43631 |
1 |
| Shimadzu Corporation | 6306 |
1 |
| Rockwell Collins, Inc. | 2552 |
1 |
| Georgia Tech Research Corporation | 2901 |
1 |
| Japan Science and Technology Agency | 1234 |
1 |
| Boe Technology Group Co., Ltd. | 43067 |
1 |
| Aramco Services Company | 4162 |
1 |
| Les Equipements D'erabliere CDL Inc. | 22 |
1 |
| Other owners | 21 |