- 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: 611
10-year publication summary
|
74
|
77
|
60
|
40
|
34
|
28
|
28
|
13
|
12
|
6
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 6767 |
17 |
| Heraeus Electro-Nite International N.V. | 202 |
13 |
| Nippon Steel & Sumitomo Metal Corporation | 1988 |
7 |
| Saudi Arabian Oil Company | 12858 |
7 |
| LG Chem, Ltd. | 17561 |
6 |
| Nippon Steel Corporation | 6166 |
6 |
| Schlumberger Technology Corporation | 10627 |
5 |
| Massachusetts Institute of Technology | 10013 |
5 |
| Nippon Telegraph and Telephone Corporation | 17157 |
5 |
| Halliburton Energy Services, Inc. | 20749 |
4 |
| The Regents of the University of California | 19812 |
4 |
| Xerox Corporation | 7026 |
4 |
| The Boeing Company | 20013 |
4 |
| Ajjer, LLC | 12 |
4 |
| ARKRAY, Inc. | 877 |
4 |
| JNC Corporation | 1548 |
4 |
| Novelis Inc. | 735 |
4 |
| Outotec (Finland) Oy | 480 |
4 |
| TDW Delaware, Inc. | 167 |
4 |
| ThyssenKrupp AG | 3266 |
4 |
| Other owners | 496 |