- All sections
- C - Chemistry; metallurgy
- C03C - Chemical composition of glasses, glazes or vitreous enamels; surface treatment of glass; surface treatment of fibres or filaments made from glass, minerals or slags; joining 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: 459
10-year publication summary
|
29
|
14
|
23
|
40
|
31
|
33
|
37
|
29
|
33
|
13
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hoya Corporation | 2822 |
60 |
| Ohara Inc. | 200 |
58 |
| CDGM Glass Co., Ltd | 124 |
51 |
| Nippon Electric Glass Co., Ltd. | 2299 |
44 |
| Corning Incorporated | 9932 |
35 |
| SCHOTT AG | 1675 |
28 |
| Agc, Inc. | 4029 |
28 |
| Asahi Glass Company, Limited | 2985 |
14 |
| Nikon Corporation | 7162 |
13 |
| Sumita Optical Glass, Inc. | 42 |
8 |
| Kabushiki Kaisha Ohara | 18 |
6 |
| Nihon Yamamura Glass Co., Ltd. | 144 |
6 |
| Olympus Corporation | 13667 |
5 |
| Central Glass Company, Limited | 1244 |
5 |
| Hikari Glass Co., Ltd. | 10 |
5 |
| LG Electronics Inc. | 69257 |
4 |
| China Building Materials Academy | 19 |
4 |
| SCHOTT Glass Technologies (Suzhou) Co. Ltd. | 94 |
4 |
| Toyo Seikan Group Holdings, Ltd. | 765 |
4 |
| The University of Tokyo | 3903 |
4 |
| Other owners | 73 |