- All sections
- C - Chemistrymetallurgy
- C03C - Chemical composition of glasses, glazes or vitreous enamelssurface treatment of glasssurface treatment of fibres or filaments made from glass, minerals or slagsjoining glass to glass or other materials
- C03C 3/155 - Silica-free oxide glass compositions containing boron containing rare earths containing zirconium, titanium, tantalum or niobium
Patent holdings for IPC class C03C 3/155
Total number of patents in this class: 128
10-year publication summary
|
4
|
5
|
13
|
7
|
6
|
11
|
13
|
8
|
3
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hoya Corporation | 2753 |
23 |
| Corning Incorporated | 10349 |
19 |
| Ohara Inc. | 207 |
19 |
| Nippon Electric Glass Co., Ltd. | 2495 |
14 |
| CDGM Glass Co., Ltd | 142 |
11 |
| Nikon Corporation | 7295 |
9 |
| Asahi Glass Company, Limited | 2714 |
5 |
| The University of Tokyo | 4276 |
4 |
| Agc, Inc. | 5110 |
4 |
| Canon Inc. | 41438 |
3 |
| Hamamatsu Photonics K.K. | 4552 |
2 |
| Sumita Optical Glass, Inc. | 43 |
2 |
| Samsung Display Co., Ltd. | 36963 |
1 |
| Hitachi, Ltd. | 15771 |
1 |
| Konica Minolta Opto, Inc. | 1017 |
1 |
| DENTSPLY International Inc. | 374 |
1 |
| Ferro Corporation | 228 |
1 |
| Nippon Sheet Glass Company, Limited | 973 |
1 |
| OCI Company Ltd. | 159 |
1 |
| SCHOTT AG | 1722 |
1 |
| Other owners | 5 |