- All sections
- G - Physics
- G01N - Investigating or analysing materials by determining their chemical or physical properties
- G01N 21/892 - Investigating the presence of flaws, defects or contamination in moving material, e.g. paper, textiles characterised by the flaw, defect or object feature examined
Patent holdings for IPC class G01N 21/892
Total number of patents in this class: 496
10-year publication summary
|
29
|
34
|
47
|
39
|
33
|
37
|
37
|
40
|
44
|
26
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sumitomo Chemical Company, Limited | 8965 |
37 |
| JFE Steel Corporation | 7632 |
25 |
| FUJIFILM Corporation | 30689 |
22 |
| Nitto Denko Corporation | 8589 |
16 |
| Konica Minolta, Inc. | 9176 |
16 |
| CKD Corporation | 470 |
12 |
| Nippon Steel Corporation | 6982 |
12 |
| Toray Industries, Inc. | 7149 |
11 |
| Nippon Steel & Sumitomo Metal Corporation | 1981 |
11 |
| Yoshino Gypsum Co., Ltd. | 268 |
8 |
| LG Energy Solution, Ltd. | 19461 |
8 |
| Mitsubishi Electric Corporation | 48351 |
7 |
| Omron Corporation | 7425 |
7 |
| Sumitomo Electric Industries, Ltd. | 16368 |
6 |
| Toray Engineering Co., Ltd. | 533 |
5 |
| MainTech Co., Ltd. | 66 |
5 |
| Columbia Insurance Company | 1442 |
4 |
| Hitachi, Ltd. | 16206 |
4 |
| Ricoh Company, Ltd. | 13386 |
4 |
| Contemporary Amperex Technology Co., Limited | 10444 |
4 |
| Other owners | 272 |