- All sections
- G - Physics
- G01N - Investigating or analysing materials by determining their chemical or physical properties
- G01N 21/43 - Refractivity; Phase-affecting properties, e.g. optical path length by measuring critical angle
Patent holdings for IPC class G01N 21/43
Total number of patents in this class: 191
10-year publication summary
|
10
|
12
|
15
|
21
|
18
|
11
|
14
|
10
|
10
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Corning Incorporated | 10125 |
15 |
| Eltek S.p.A. | 201 |
6 |
| Vulcan Photonics Sdn. Bhd. | 14 |
6 |
| Vaisala Oyj | 158 |
5 |
| Robert Bosch GmbH | 41786 |
3 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10692 |
3 |
| Diafir | 6 |
3 |
| Lacrisciences, LLC | 18 |
3 |
| Mitsumi Electric Co., Ltd. | 1079 |
3 |
| RareCyte, Inc. | 155 |
3 |
| General Electric Company | 17789 |
2 |
| NEC Corporation | 34413 |
2 |
| Centre National de La Recherche Scientifique | 10102 |
2 |
| Ricoh Company, Ltd. | 13216 |
2 |
| Koninklijke Philips Electronics N.V. | 10844 |
2 |
| Conti Temic microelectronic GmbH | 922 |
2 |
| Anton Paar OptoTec GmbH | 10 |
2 |
| Cementation Skanska Limited | 10 |
2 |
| Entegris, Inc. | 1814 |
2 |
| Inergy Automotive Systems Research (Societe Anonyme) | 193 |
2 |
| Other owners | 121 |