- All sections
- G - Physics
- G01N - Investigating or analysing materials by determining their chemical or physical properties
- G01N 33/20 - Metals
Patent holdings for IPC class G01N 33/20
Total number of patents in this class: 610
10-year publication summary
|
77
|
53
|
39
|
32
|
26
|
27
|
13
|
13
|
15
|
5
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 7235 |
18 |
| Heraeus Electro-Nite International N.V. | 218 |
12 |
| LG Chem, Ltd. | 17778 |
7 |
| Nippon Steel & Sumitomo Metal Corporation | 1985 |
7 |
| Saudi Arabian Oil Company | 13904 |
7 |
| Nippon Steel Corporation | 6651 |
6 |
| Schlumberger Technology Corporation | 11349 |
5 |
| Massachusetts Institute of Technology | 10190 |
5 |
| Nippon Telegraph and Telephone Corporation | 16263 |
5 |
| Halliburton Energy Services, Inc. | 21144 |
4 |
| The Regents of the University of California | 20447 |
4 |
| The Boeing Company | 20110 |
4 |
| Ajjer, LLC | 12 |
4 |
| ARKRAY, Inc. | 861 |
4 |
| JNC Corporation | 1519 |
4 |
| Novelis Inc. | 785 |
4 |
| Outotec (Finland) Oy | 458 |
4 |
| TDW Delaware, Inc. | 165 |
4 |
| ThyssenKrupp AG | 3426 |
4 |
| Snecma | 1061 |
4 |
| Other owners | 494 |