- All sections
- G - Physics
- G01N - Investigating or analysing materials by determining their chemical or physical properties
- G01N 27/84 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields by applying magnetic powder or magnetic ink
Patent holdings for IPC class G01N 27/84
Total number of patents in this class: 61
10-year publication summary
|
4
|
4
|
3
|
10
|
4
|
0
|
4
|
2
|
2
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Illinois Tool Works Inc. | 11478 |
17 |
| Siemens Energy, Inc. | 1713 |
3 |
| Helling GmbH | 16 |
2 |
| Nippon Steel Corporation | 6274 |
2 |
| Halliburton Energy Services, Inc. | 20911 |
1 |
| Siemens AG | 24453 |
1 |
| SNECMA S.A. | 1148 |
1 |
| International Business Machines Corporation | 61305 |
1 |
| FUJIFILM Corporation | 29437 |
1 |
| Texas Instruments Incorporated | 19443 |
1 |
| Caterpillar Inc. | 9579 |
1 |
| Alstom Technology Ltd | 1100 |
1 |
| The Regents of the University of Michigan | 4711 |
1 |
| JTEKT Corporation | 2508 |
1 |
| Bell Helicopter Textron Inc. | 1064 |
1 |
| Bharat Forge Ltd. | 40 |
1 |
| East China University of Science and Technology | 514 |
1 |
| Glory Ltd. | 1212 |
1 |
| Goodrich Corporation | 2132 |
1 |
| Hohai University | 212 |
1 |
| Other owners | 21 |