- All sections
- G - Physics
- G01N - Investigating or analysing materials by determining their chemical or physical properties
- G01N 21/958 - Inspecting transparent materials
Patent holdings for IPC class G01N 21/958
Total number of patents in this class: 620
10-year publication summary
|
60
|
58
|
42
|
51
|
54
|
49
|
41
|
68
|
49
|
18
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Saint-Gobain Glass France | 3641 |
34 |
| Corning Incorporated | 9932 |
21 |
| Nippon Electric Glass Co., Ltd. | 2299 |
16 |
| Glasstech, Inc. | 131 |
13 |
| Isra Surface Vision GmbH | 15 |
10 |
| KLA-Tencor Corporation | 2574 |
10 |
| Carl Zeiss Vision International GmbH | 556 |
9 |
| Emage Vision Pte. Ltd | 16 |
9 |
| Samsung Display Co., Ltd. | 30585 |
8 |
| Nitto Denko Corporation | 7879 |
8 |
| Sumitomo Chemical Company, Limited | 8808 |
8 |
| Shenzhen China Star Optoelectronics Technology Co., Ltd. | 8635 |
8 |
| Alcon, Inc. | 4899 |
8 |
| Belron International Limited | 220 |
8 |
| Robert Bosch GmbH | 40953 |
7 |
| Essilor International (compagnie Generale D'optique) | 2918 |
7 |
| Pilkington Group Limited | 748 |
7 |
| SCHOTT AG | 1675 |
7 |
| The Boeing Company | 19843 |
6 |
| Apple Inc. | 50209 |
5 |
| Other owners | 411 |