- All sections
- G - Physics
- G01J - Measurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infrared, visible or ultraviolet light; colorimetry; radiation pyrometry
- G01J 3/51 - Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors using colour filters
Patent holdings for IPC class G01J 3/51
Total number of patents in this class: 570
10-year publication summary
|
38
|
44
|
60
|
58
|
62
|
51
|
38
|
35
|
32
|
6
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Seiko Epson Corporation | 18724 |
50 |
| Konica Minolta, Inc. | 8349 |
22 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
14 |
| Align Technology, Inc. | 1818 |
13 |
| ams AG | 807 |
10 |
| X-Rite, Inc. | 89 |
9 |
| Sony Corporation | 32931 |
8 |
| Olympus Corporation | 13667 |
8 |
| Viavi Solutions Inc. | 1363 |
8 |
| Urugus S.A. | 36 |
8 |
| ams Sensors Germany GmbH | 71 |
8 |
| Koninklijke Philips Electronics N.V. | 13133 |
7 |
| Apple Inc. | 50209 |
6 |
| Hamamatsu Photonics K.K. | 4161 |
6 |
| Chemimage Technologies LLC | 75 |
6 |
| Digimarc Corporation | 787 |
6 |
| Samsung Electronics Co., Ltd. | 131630 |
5 |
| The Regents of the University of California | 18943 |
5 |
| Xerox Corporation | 7503 |
5 |
| Sharp Corporation | 10015 |
5 |
| Other owners | 361 |