- All sections
- G - Physics
- G01J - Measurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infrared, visible or ultraviolet lightcolorimetryradiation pyrometry
- G01J 3/52 - Measurement of colourColour measuring devices, e.g. colorimeters using colour charts
Patent holdings for IPC class G01J 3/52
Total number of patents in this class: 439
10-year publication summary
|
40
|
45
|
48
|
65
|
34
|
36
|
34
|
40
|
18
|
13
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Seiko Epson Corporation | 19316 |
30 |
| Konica Minolta, Inc. | 8701 |
26 |
| FUJIFILM Corporation | 29295 |
16 |
| Ricoh Company, Ltd. | 13198 |
12 |
| Datacolor, Inc. | 35 |
12 |
| Canon Inc. | 39660 |
10 |
| Hewlett-Packard Development Company, L.P. | 25910 |
9 |
| Dai Nippon Printing Co., Ltd. | 4071 |
9 |
| Henkel AG & Co. KGaA | 10525 |
6 |
| Akzo Nobel Coatings International B.V. | 2092 |
6 |
| Axalta Coating Systems IP Co., LLC | 474 |
6 |
| Dental Monitoring | 146 |
6 |
| NEC Corporation | 35509 |
5 |
| PPG Industries Ohio, Inc. | 3456 |
5 |
| Coatings Foreign IP Co. LLC | 141 |
5 |
| DIC Corporation | 3780 |
5 |
| X-Rite Switzerland GmbH | 53 |
5 |
| Healthy.io Ltd | 80 |
5 |
| ams Sensors Germany GmbH | 86 |
5 |
| Unilever PLC | 3214 |
4 |
| Other owners | 252 |