- 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 3/06 - Glass compositions containing silica with more than 90% silica by weight, e.g. quartz
Patent holdings for IPC class C03C 3/06
Total number of patents in this class: 539
10-year publication summary
|
55
|
34
|
43
|
37
|
27
|
29
|
19
|
39
|
27
|
15
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Corning Incorporated | 10500 |
106 |
| Heraeus Quarzglas GmbH & Co. KG | 417 |
84 |
| Shin-Etsu Chemical Co., Ltd. | 6083 |
31 |
| Shin-Etsu Quartz Products Co., Ltd. | 144 |
30 |
| Asahi Glass Company, Limited | 2625 |
28 |
| Agc, Inc. | 5502 |
25 |
| Sumitomo Electric Industries, Ltd. | 16305 |
18 |
| Carl Zeiss SMT GmbH | 3328 |
10 |
| Hoya Corporation | 2719 |
9 |
| Nippon Electric Glass Co., Ltd. | 2554 |
7 |
| Tosoh SGM Corporation | 15 |
6 |
| Momentive Performance Materials Quartz, Inc. | 68 |
6 |
| SCHOTT AG | 1737 |
5 |
| A&A Green Phoenix Group Joint Stock Company, AKA Phenikaa Group | 61 |
5 |
| Nikon Corporation | 7235 |
4 |
| Covestro LLC | 610 |
4 |
| NGK Insulators, Ltd. | 5232 |
3 |
| Mitsubishi Chemical Corporation | 4721 |
3 |
| Degussa Novara Technology S.p.A. | 6 |
3 |
| Koito Manufacturing Co., Ltd. | 2442 |
3 |
| Other owners | 149 |