- 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: 661
10-year publication summary
|
58
|
42
|
51
|
54
|
49
|
41
|
72
|
49
|
49
|
30
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Saint-Gobain Glass France | 3756 |
35 |
| Corning Incorporated | 10263 |
21 |
| Nippon Electric Glass Co., Ltd. | 2457 |
15 |
| Glasstech, Inc. | 122 |
13 |
| KLA-Tencor Corporation | 2544 |
10 |
| Samsung Display Co., Ltd. | 34798 |
9 |
| Alcon, Inc. | 5439 |
9 |
| Carl Zeiss Vision International GmbH | 629 |
9 |
| Belron International Limited | 210 |
9 |
| Nitto Denko Corporation | 8241 |
8 |
| Sumitomo Chemical Company, Limited | 9047 |
8 |
| Shenzhen China Star Optoelectronics Technology Co., Ltd. | 8478 |
8 |
| Isra Surface Vision GmbH | 11 |
8 |
| Pilkington Group Limited | 773 |
8 |
| Emage Vision Pte. Ltd | 18 |
8 |
| The Boeing Company | 20053 |
7 |
| Robert Bosch GmbH | 42684 |
7 |
| Essilor International (compagnie Generale D'optique) | 2996 |
7 |
| SCHOTT AG | 1712 |
7 |
| Applied Materials, Inc. | 18658 |
6 |
| Other owners | 449 |