- 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: 468
10-year publication summary
|
35
|
28
|
33
|
45
|
37
|
32
|
35
|
36
|
37
|
43
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sumitomo Chemical Company, Limited | 9095 |
38 |
| JFE Steel Corporation | 7012 |
24 |
| FUJIFILM Corporation | 29752 |
20 |
| Konica Minolta, Inc. | 8853 |
16 |
| Nitto Denko Corporation | 8352 |
15 |
| CKD Corporation | 457 |
12 |
| Nippon Steel Corporation | 6465 |
12 |
| Toray Industries, Inc. | 7004 |
11 |
| Nippon Steel & Sumitomo Metal Corporation | 1987 |
11 |
| Yoshino Gypsum Co., Ltd. | 251 |
8 |
| Mitsubishi Electric Corporation | 46765 |
7 |
| Sumitomo Electric Industries, Ltd. | 15705 |
6 |
| MainTech Co., Ltd. | 66 |
6 |
| LG Energy Solution, Ltd. | 15682 |
6 |
| Omron Corporation | 7306 |
5 |
| Toray Engineering Co., Ltd. | 503 |
5 |
| Columbia Insurance Company | 1526 |
4 |
| Hitachi, Ltd. | 15632 |
4 |
| Ricoh Company, Ltd. | 13363 |
4 |
| Glory Ltd. | 1229 |
4 |
| Other owners | 250 |