- 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 3/06 - 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: 521
10-year publication summary
|
34
|
42
|
55
|
34
|
43
|
37
|
24
|
28
|
19
|
17
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Corning Incorporated | 9932 |
99 |
| Heraeus Quarzglas GmbH & Co. KG | 420 |
89 |
| Asahi Glass Company, Limited | 2985 |
36 |
| Shin-Etsu Quartz Products Co., Ltd. | 160 |
32 |
| Shin-Etsu Chemical Co., Ltd. | 5132 |
26 |
| Agc, Inc. | 4029 |
22 |
| Sumitomo Electric Industries, Ltd. | 14131 |
15 |
| Hoya Corporation | 2822 |
8 |
| Carl Zeiss SMT GmbH | 2646 |
8 |
| Nippon Electric Glass Co., Ltd. | 2299 |
8 |
| Momentive Performance Materials Quartz, Inc. | 73 |
7 |
| Degussa Novara Technology S.p.A. | 13 |
6 |
| Nikon Corporation | 7162 |
5 |
| SCHOTT AG | 1675 |
5 |
| Tosoh SGM Corporation | 13 |
5 |
| NGK Insulators, Ltd. | 4589 |
3 |
| Mitsubishi Chemical Corporation | 4313 |
3 |
| Koito Manufacturing Co., Ltd. | 1991 |
3 |
| Mitsubishi Materials Corporation | 2378 |
3 |
| Tosoh Quartz Corporation | 11 |
3 |
| Other owners | 135 |