- 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: 422
10-year publication summary
|
13
|
24
|
27
|
31
|
44
|
59
|
50
|
54
|
45
|
10
|
| 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 | 506 |
23 |
| Northeastern University | 536 |
16 |
| Verderg Pipe Technology Limited | 17 |
15 |
| Saudi Arabian Oil Company | 12833 |
14 |
| Halliburton Energy Services, Inc. | 20730 |
13 |
| Shenzhen University | 1628 |
9 |
| China University of Mining and Technology, Beijing | 87 |
8 |
| Zhejiang University | 3087 |
7 |
| LG Energy Solution, Ltd. | 14364 |
7 |
| Aramco Services Company | 3904 |
6 |
| Institute of Geology and Geophysics, Chinese Academy of Sciences | 324 |
6 |
| Shandong University | 1017 |
6 |
| Anhui University of Science and Technology | 185 |
5 |
| Qingdao University of Technology | 607 |
5 |
| China University of Mining and Technology | 1241 |
4 |
| Sichuan University | 557 |
4 |
| State Farm Mutual Automobile Insurance Company | 3052 |
4 |
| True Crush Testing, LLC | 5 |
4 |
| Schlumberger Technology Corporation | 10608 |
3 |
| Toyota Motor Corporation | 31377 |
3 |
| Other owners | 260 |