- All sections
- G - Physics
- G01N - Investigating or analysing materials by determining their chemical or physical properties
- G01N 3/12 - Pressure-testing
Patent holdings for IPC class G01N 3/12
Total number of patents in this class: 408
10-year publication summary
|
13
|
24
|
27
|
31
|
44
|
58
|
50
|
52
|
44
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Shandong University of Science and Technology | 502 |
22 |
| Northeastern University | 522 |
16 |
| Verderg Pipe Technology Limited | 17 |
15 |
| Saudi Arabian Oil Company | 12446 |
14 |
| Halliburton Energy Services, Inc. | 20438 |
13 |
| Shenzhen University | 1605 |
9 |
| China University of Mining and Technology, Beijing | 81 |
8 |
| Zhejiang University | 2950 |
7 |
| LG Energy Solution, Ltd. | 12884 |
7 |
| Aramco Services Company | 3750 |
6 |
| Institute of Geology and Geophysics, Chinese Academy of Sciences | 308 |
6 |
| Shandong University | 974 |
6 |
| Anhui University of Science and Technology | 178 |
5 |
| Qingdao University of Technology | 590 |
5 |
| China University of Mining and Technology | 1225 |
4 |
| Sichuan University | 540 |
4 |
| State Farm Mutual Automobile Insurance Company | 2928 |
4 |
| True Crush Testing, LLC | 5 |
4 |
| Schlumberger Technology Corporation | 10263 |
3 |
| Toyota Motor Corporation | 30455 |
3 |
| Other owners | 247 |