- All sections
- G - Physics
- G01N - Investigating or analysing materials by determining their chemical or physical properties
- G01N 21/27 - ColourSpectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection
Patent holdings for IPC class G01N 21/27
Total number of patents in this class: 3784
10-year publication summary
|
305
|
319
|
370
|
357
|
295
|
304
|
264
|
240
|
155
|
74
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Konica Minolta, Inc. | 8613 |
71 |
| Panasonic Intellectual Property Management Co., Ltd. | 30506 |
66 |
| Halliburton Energy Services, Inc. | 20635 |
52 |
| Hitachi High-Tech Corporation | 5179 |
47 |
| Olympus Corporation | 13227 |
46 |
| Sony Corporation | 31261 |
44 |
| FUJIFILM Corporation | 29082 |
44 |
| Hamamatsu Photonics K.K. | 4363 |
40 |
| NEC Corporation | 34993 |
38 |
| Shimadzu Corporation | 6105 |
36 |
| Sony Group Corporation | 13182 |
34 |
| F. Hoffmann-La Roche AG | 7889 |
32 |
| Nikon Corporation | 7145 |
31 |
| Viavi Solutions Inc. | 1401 |
31 |
| Canon Kabushiki Kaisha | 7008 |
30 |
| Hitachi High-Technologies Corporation | 2013 |
26 |
| Siemens Healthcare Diagnostics Inc. | 2030 |
26 |
| National Institute of Advanced Industrial Science and Technology | 3754 |
21 |
| Samsung Electronics Co., Ltd. | 142124 |
20 |
| Hitachi, Ltd. | 15334 |
20 |
| Other owners | 3029 |