- All sections
- G - Physics
- G01N - Investigating or analysing materials by determining their chemical or physical properties
- G01N 21/45 - Refractivity; Phase-affecting properties, e.g. optical path length using Schlieren methods
Patent holdings for IPC class G01N 21/45
Total number of patents in this class: 1027
10-year publication summary
|
50
|
56
|
70
|
79
|
89
|
75
|
104
|
101
|
83
|
29
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hamamatsu Photonics K.K. | 4161 |
40 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10525 |
27 |
| Salvus, LLC | 35 |
14 |
| FUJIFILM Corporation | 27102 |
13 |
| The General Hospital Corporation | 4517 |
13 |
| The Regents of the University of California | 18943 |
12 |
| bioMerieux | 917 |
12 |
| Centre National de La Recherche Scientifique | 9632 |
11 |
| Purdue Research Foundation | 3277 |
11 |
| Trustees of Boston University | 928 |
11 |
| Halliburton Energy Services, Inc. | 20165 |
10 |
| Access Medical Systems, Ltd. | 62 |
10 |
| DiaMonTech AG | 33 |
9 |
| Massachusetts Institute of Technology | 9795 |
8 |
| Shimadzu Corporation | 5791 |
8 |
| Georgia Tech Research Corporation | 2453 |
8 |
| Vanderbilt University | 1731 |
8 |
| Canon Kabushiki Kaisha | 6884 |
8 |
| Aryballe Technologies | 51 |
8 |
| KLA Corporation | 1223 |
8 |
| Other owners | 778 |