- All sections
- G - Physics
- G01N - Investigating or analysing materials by determining their chemical or physical properties
- G01N 21/41 - Refractivity; Phase-affecting properties, e.g. optical path length
Patent holdings for IPC class G01N 21/41
Total number of patents in this class: 1209
10-year publication summary
|
90
|
100
|
83
|
99
|
98
|
102
|
109
|
86
|
77
|
34
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Corning Incorporated | 9932 |
27 |
| Konica Minolta, Inc. | 8349 |
27 |
| Shimadzu Corporation | 5791 |
23 |
| Hamamatsu Photonics K.K. | 4161 |
22 |
| Mitsubishi Electric Corporation | 43934 |
16 |
| Halliburton Energy Services, Inc. | 20165 |
14 |
| Nippon Telegraph and Telephone Corporation | 14195 |
14 |
| Centre National de La Recherche Scientifique | 9632 |
11 |
| FUJIFILM Corporation | 27102 |
11 |
| National Institute of Advanced Industrial Science and Technology | 3677 |
9 |
| Canon Kabushiki Kaisha | 6884 |
9 |
| Applied Materials, Inc. | 16587 |
8 |
| Tokyo Electron Limited | 11599 |
8 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10525 |
8 |
| Atlas Elektronik GmbH | 395 |
8 |
| Korea Research Institute of Standards and Science | 639 |
8 |
| ThyssenKrupp AG | 3086 |
8 |
| DiaMonTech AG | 33 |
8 |
| Wyatt Technology, LLC | 97 |
8 |
| Schlumberger Technology Corporation | 9690 |
7 |
| Other owners | 955 |