- All sections
- G - Physics
- G01N - Investigating or analysing materials by determining their chemical or physical properties
- G01N 27/87 - 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 using probes
Patent holdings for IPC class G01N 27/87
Total number of patents in this class: 89
10-year publication summary
|
3
|
5
|
14
|
11
|
18
|
7
|
6
|
8
|
7
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Institut Dr. Foerster GmbH & Co. KG | 32 |
8 |
| TDW Delaware, Inc. | 172 |
6 |
| Schlumberger Technology Corporation | 10341 |
3 |
| Advanced Engineering Solutions Ltd | 17 |
3 |
| V & M Deutschland GmbH | 40 |
3 |
| Prüftechnik Dieter Busch GmbH | 162 |
3 |
| Pure Technologies Ltd. | 94 |
2 |
| Russell NDE Systems Inc. | 12 |
2 |
| Wilco AG | 44 |
2 |
| KPL South Texas, LLC | 4 |
2 |
| Quest Integrity Group LLC | 18 |
2 |
| Rtx Corporation | 9172 |
2 |
| Schlumberger Canada Limited | 7178 |
1 |
| Schlumberger Technology B.v. | 5089 |
1 |
| Halliburton Energy Services, Inc. | 20506 |
1 |
| 3m Innovative Properties Company | 18002 |
1 |
| ExxonMobil Research And Engineering Company | 2649 |
1 |
| Airbus France | 232 |
1 |
| Robert Bosch GmbH | 41933 |
1 |
| Denso Corporation | 23877 |
1 |
| Other owners | 43 |