- All sections
- G - Physics
- G01N - Investigating or analysing materials by determining their chemical or physical properties
- G01N 21/41 - RefractivityPhase-affecting properties, e.g. optical path length
Patent holdings for IPC class G01N 21/41
Total number of patents in this class: 1272
10-year publication summary
|
100
|
83
|
99
|
98
|
101
|
113
|
91
|
80
|
86
|
45
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Konica Minolta, Inc. | 8751 |
27 |
| Corning Incorporated | 10268 |
26 |
| Hamamatsu Photonics K.K. | 4419 |
24 |
| Shimadzu Corporation | 6171 |
23 |
| Mitsubishi Electric Corporation | 46160 |
21 |
| Nippon Telegraph and Telephone Corporation | 17349 |
15 |
| Halliburton Energy Services, Inc. | 20908 |
14 |
| FUJIFILM Corporation | 29424 |
12 |
| Applied Materials, Inc. | 18706 |
12 |
| Centre National de La Recherche Scientifique | 10442 |
10 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10917 |
9 |
| National Institute of Advanced Industrial Science and Technology | 3791 |
9 |
| Korea Research Institute of Standards and Science | 676 |
9 |
| Tokyo Electron Limited | 12751 |
8 |
| Atlas Elektronik GmbH | 397 |
8 |
| ThyssenKrupp AG | 3290 |
8 |
| Canon Kabushiki Kaisha | 7063 |
8 |
| DiaMonTech AG | 33 |
8 |
| Schlumberger Technology Corporation | 10745 |
7 |
| Baker Hughes Incorporated | 5238 |
7 |
| Other owners | 1007 |