Patent holdings for IPC class C30B 25/20

Total number of patents in this class: 746

10-year publication summary

40
75
61
38
63
47
53
53
52
54
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Principal owners for this class

Owner
All patents
This class
Sumitomo Electric Industries, Ltd.
15668
95
Mitsubishi Chemical Corporation
4585
48
Element Six Technologies Limited
200
40
Resonac Corporation
2926
32
Sumco Corporation
1114
31
Sumitomo Chemical Company, Limited
9092
22
National Institute of Advanced Industrial Science and Technology
3797
17
Tokuyama Corporation
1422
16
Mitsubishi Electric Corporation
46618
14
Shin-Etsu Chemical Co., Ltd.
5715
14
NGK Insulators, Ltd.
5115
14
Fuji Electric Co., Ltd.
5220
14
Shin-Etsu Handotai Co., Ltd.
1288
14
Siltronic AG
423
14
Showa Denko K.K.
2193
13
Globalwafers Co., Ltd.
651
12
Kwansei Gakuin Educational Foundation
218
12
Denso Corporation
24588
11
Tamura Corporation
359
11
Sumitomo Electric Hardmetal Corp.
1038
10
Other owners 292