- 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: 472
10-year publication summary
|
28
|
33
|
45
|
37
|
32
|
35
|
36
|
38
|
44
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sumitomo Chemical Company, Limited | 9053 |
38 |
| JFE Steel Corporation | 7179 |
24 |
| FUJIFILM Corporation | 30034 |
21 |
| Konica Minolta, Inc. | 8964 |
16 |
| Nitto Denko Corporation | 8410 |
15 |
| CKD Corporation | 458 |
12 |
| Nippon Steel Corporation | 6595 |
12 |
| Toray Industries, Inc. | 7011 |
11 |
| Nippon Steel & Sumitomo Metal Corporation | 1985 |
11 |
| Yoshino Gypsum Co., Ltd. | 257 |
8 |
| Mitsubishi Electric Corporation | 47352 |
7 |
| Sumitomo Electric Industries, Ltd. | 15967 |
6 |
| MainTech Co., Ltd. | 67 |
6 |
| LG Energy Solution, Ltd. | 16722 |
6 |
| Omron Corporation | 7332 |
5 |
| Toray Engineering Co., Ltd. | 501 |
5 |
| Columbia Insurance Company | 1508 |
4 |
| Hitachi, Ltd. | 15800 |
4 |
| Ricoh Company, Ltd. | 13339 |
4 |
| Glory Ltd. | 1247 |
4 |
| Other owners | 253 |