- 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: 53
10-year publication summary
|
3
|
6
|
3
|
4
|
2
|
6
|
4
|
4
|
5
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20871 |
4 |
| Validere Technologies Inc. | 18 |
4 |
| Red Meters LLC | 6 |
3 |
| Schlumberger Canada Limited | 7290 |
2 |
| Saudi Arabian Oil Company | 13044 |
2 |
| Shanghai Institute of Ceramics, Chinese Academy of Sciences | 157 |
2 |
| General Electric Company | 13762 |
1 |
| Schlumberger Technology Corporation | 10691 |
1 |
| Schlumberger Technology B.v. | 5166 |
1 |
| Schlumberger Holdings Limited | 2833 |
1 |
| Toyota Motor Corporation | 31903 |
1 |
| Mitsubishi Heavy Industries, Ltd. | 8703 |
1 |
| Robert Bosch GmbH | 42647 |
1 |
| Shimadzu Corporation | 6163 |
1 |
| Georgia Tech Research Corporation | 2729 |
1 |
| Japan Science and Technology Agency | 1325 |
1 |
| Boe Technology Group Co., Ltd. | 40988 |
1 |
| Aramco Services Company | 3946 |
1 |
| Duna-corradini S.p.A. | 15 |
1 |
| Les Equipements D'erabliere CDL Inc. | 23 |
1 |
| Other owners | 22 |