Patent holdings for IPC class C03B 8/04

Total number of patents in this class: 76

10-year publication summary

1
6
6
5
8
4
6
4
4
0
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Principal owners for this class

Owner
All patents
This class
Sumitomo Electric Industries, Ltd.
15483
29
Shin-Etsu Chemical Co., Ltd.
5658
9
The Furukawa Electric Co., Ltd.
3650
8
Fujikura Ltd.
2933
7
Asahi Glass Company, Limited
2786
6
Shin-Etsu Quartz Products Co., Ltd.
146
5
Agc, Inc.
4839
3
Nikon Corporation
7163
2
Kyocera Corporation
13799
2
Agilent Technologies, Inc.
2631
1
Heraeus Quarzglas GmbH & Co. KG
409
1
Opto-Electronics Laboratory, Inc.
1
1
STI Co., Ltd.
73
1
Tokuyama Corporation
1389
1
Other owners 0