- All sections
- G - Physics
- G01N - Investigating or analysing materials by determining their chemical or physical properties
- G01N 21/27 - Colour; Spectral 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: 3685
10-year publication summary
|
233
|
303
|
319
|
370
|
356
|
294
|
297
|
257
|
234
|
62
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Konica Minolta, Inc. | 8349 |
70 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
61 |
| Halliburton Energy Services, Inc. | 20165 |
52 |
| Olympus Corporation | 13667 |
47 |
| Sony Corporation | 32931 |
44 |
| FUJIFILM Corporation | 27102 |
43 |
| NEC Corporation | 32703 |
38 |
| Hitachi High-Tech Corporation | 4424 |
37 |
| Shimadzu Corporation | 5791 |
36 |
| Hamamatsu Photonics K.K. | 4161 |
35 |
| F. Hoffmann-La Roche AG | 7958 |
33 |
| Nikon Corporation | 7162 |
33 |
| Canon Kabushiki Kaisha | 6884 |
30 |
| Sony Group Corporation | 10730 |
30 |
| Viavi Solutions Inc. | 1363 |
29 |
| Hitachi High-Technologies Corporation | 2034 |
28 |
| Siemens Healthcare Diagnostics Inc. | 1946 |
25 |
| National Institute of Advanced Industrial Science and Technology | 3677 |
22 |
| Labrador Diagnostics LLC | 287 |
20 |
| Hitachi, Ltd. | 16452 |
19 |
| Other owners | 2953 |