- 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: 457
10-year publication summary
|
24
|
27
|
31
|
44
|
59
|
50
|
54
|
47
|
32
|
18
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Shandong University of Science and Technology | 545 |
24 |
| Northeastern University | 573 |
19 |
| Saudi Arabian Oil Company | 14207 |
15 |
| Verderg Pipe Technology Limited | 16 |
14 |
| Halliburton Energy Services, Inc. | 21320 |
13 |
| Shenzhen University | 1725 |
9 |
| LG Energy Solution, Ltd. | 18838 |
9 |
| China University of Mining and Technology, Beijing | 107 |
8 |
| Zhejiang University | 3441 |
8 |
| Aramco Services Company | 4188 |
6 |
| Institute of Geology and Geophysics, Chinese Academy of Sciences | 354 |
6 |
| Shandong University | 1151 |
6 |
| Anhui University of Science and Technology | 197 |
5 |
| Qingdao University of Technology | 641 |
5 |
| The Boeing Company | 20160 |
4 |
| China University of Mining and Technology | 1308 |
4 |
| China University of Petroleum (Beijing) | 303 |
4 |
| Sichuan University | 628 |
4 |
| State Farm Mutual Automobile Insurance Company | 3414 |
4 |
| True Crush Testing, LLC | 5 |
4 |
| Other owners | 286 |