- All sections
- G - Physics
- G01N - Investigating or analysing materials by determining their chemical or physical properties
- G01N 13/00 - Investigating surface or boundary effects, e.g. wetting powerInvestigating diffusion effectsAnalysing materials by determining surface, boundary, or diffusion effects
Patent holdings for IPC class G01N 13/00
Total number of patents in this class: 543
10-year publication summary
|
40
|
42
|
35
|
46
|
33
|
36
|
45
|
33
|
29
|
25
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Saudi Arabian Oil Company | 13409 |
27 |
| Schlumberger Technology Corporation | 10898 |
12 |
| Halliburton Energy Services, Inc. | 20964 |
11 |
| Nippon Telegraph and Telephone Corporation | 17324 |
8 |
| JFE Steel Corporation | 6965 |
8 |
| Hoffmann-La Roche Inc. | 3478 |
7 |
| Cambridge Enterprise Limited | 1196 |
7 |
| Aramco Services Company | 4033 |
6 |
| Bracco Imaging S.p.A. | 318 |
6 |
| F. Hoffmann-La Roche AG | 7948 |
5 |
| Schlumberger Canada Limited | 7369 |
5 |
| Schlumberger Technology B.v. | 5184 |
5 |
| The Regents of the University of California | 20108 |
5 |
| Services Petroliers Schlumberger | 5830 |
5 |
| Southwest Petroleum University | 477 |
5 |
| Ventana Medical Systems, Inc. | 1037 |
5 |
| Wuhan University of Technology | 192 |
5 |
| Schlumberger Holdings Limited | 2800 |
4 |
| LG Chem, Ltd. | 17676 |
4 |
| International Business Machines Corporation | 61537 |
4 |
| Other owners | 399 |