- 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 3/28 - Investigating the spectrum
Patent holdings for IPC class G01J 3/28
Total number of patents in this class: 3995
10-year publication summary
|
295
|
283
|
334
|
424
|
405
|
462
|
373
|
321
|
289
|
101
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Samsung Electronics Co., Ltd. | 131630 |
85 |
| Seiko Epson Corporation | 18724 |
76 |
| Raytheon Company | 8535 |
65 |
| Viavi Solutions Inc. | 1363 |
61 |
| Hamamatsu Photonics K.K. | 4161 |
56 |
| Rebellion Photonics, Inc. | 77 |
43 |
| Massachusetts Institute of Technology | 9795 |
34 |
| Shimadzu Corporation | 5791 |
30 |
| Cilag GmbH International | 5813 |
30 |
| Halliburton Energy Services, Inc. | 20165 |
29 |
| Corning Incorporated | 9932 |
28 |
| The Boeing Company | 19843 |
27 |
| Verifood, Ltd. | 53 |
26 |
| Wavefront Research, Inc. | 102 |
26 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
25 |
| Canon Inc. | 36841 |
24 |
| California Institute of Technology | 3884 |
24 |
| KLA-Tencor Corporation | 2574 |
24 |
| IMEC VZW | 1410 |
23 |
| Omni Medsci, Inc. | 27 |
23 |
| Other owners | 3236 |