- 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: 445
10-year publication summary
|
23
|
23
|
31
|
39
|
57
|
46
|
53
|
46
|
31
|
6
|
| 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 | 537 |
23 |
| Northeastern University | 561 |
18 |
| Saudi Arabian Oil Company | 13931 |
15 |
| Verderg Pipe Technology Limited | 17 |
15 |
| Halliburton Energy Services, Inc. | 21151 |
13 |
| Shenzhen University | 1691 |
9 |
| China University of Mining and Technology, Beijing | 102 |
8 |
| Zhejiang University | 3344 |
8 |
| LG Energy Solution, Ltd. | 17171 |
8 |
| Aramco Services Company | 4167 |
6 |
| Institute of Geology and Geophysics, Chinese Academy of Sciences | 342 |
6 |
| Shandong University | 1109 |
6 |
| Anhui University of Science and Technology | 190 |
5 |
| Qingdao University of Technology | 624 |
5 |
| The Boeing Company | 20113 |
4 |
| China University of Mining and Technology | 1289 |
4 |
| Sichuan University | 601 |
4 |
| State Farm Mutual Automobile Insurance Company | 3292 |
4 |
| True Crush Testing, LLC | 5 |
4 |
| Schlumberger Technology Corporation | 11423 |
3 |
| Other owners | 277 |