- 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 3/068 - Glass compositions containing silica with less than 40% silica by weight containing boron containing rare earths
Patent holdings for IPC class C03C 3/068
Total number of patents in this class: 521
10-year publication summary
|
23
|
40
|
31
|
33
|
38
|
29
|
33
|
39
|
33
|
20
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| CDGM Glass Co., Ltd | 148 |
62 |
| Hoya Corporation | 2717 |
60 |
| Nippon Electric Glass Co., Ltd. | 2558 |
53 |
| Ohara Inc. | 212 |
52 |
| Corning Incorporated | 10510 |
43 |
| Agc, Inc. | 5537 |
43 |
| SCHOTT AG | 1738 |
32 |
| Nikon Corporation | 7226 |
16 |
| Asahi Glass Company, Limited | 2619 |
10 |
| LG Electronics Inc. | 75818 |
9 |
| Sumita Optical Glass, Inc. | 44 |
9 |
| Nihon Yamamura Glass Co., Ltd. | 130 |
7 |
| Hoya Optical Technology (Weihai) Co., Ltd. | 12 |
7 |
| Hikari Glass Co., Ltd. | 12 |
6 |
| Olympus Corporation | 12937 |
5 |
| Central Glass Company, Limited | 1295 |
5 |
| SCHOTT Glass Technologies (Suzhou) Co. Ltd. | 114 |
5 |
| China Building Materials Academy | 26 |
4 |
| Toyo Seikan Group Holdings, Ltd. | 854 |
4 |
| The University of Tokyo | 4369 |
4 |
| Other owners | 85 |