Patent holdings for IPC class C30B 25/20

Total number of patents in this class: 810

10-year publication summary

76
61
39
64
47
53
53
56
62
48
2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

Principal owners for this class

Owner
All patents
This class
Sumitomo Electric Industries, Ltd.
16404
68
Mitsubishi Chemical Corporation
4757
49
Element Six Technologies Limited
207
43
Resonac Corporation
3739
38
Sumco Corporation
1108
33
Sumitomo Chemical Company, Limited
8989
27
Mitsumi Electric Co., Ltd.
1299
26
Denso Corporation
25799
17
Shin-Etsu Handotai Co., Ltd.
1305
17
National Institute of Advanced Industrial Science and Technology
3793
16
Tokuyama Corporation
1502
16
NGK Insulators, Ltd.
5170
15
Siltronic AG
439
15
Mitsubishi Electric Corporation
48409
14
Shin-Etsu Chemical Co., Ltd.
6148
14
Fuji Electric Co., Ltd.
5541
14
Showa Denko K.K.
2054
13
Globalwafers Co., Ltd.
735
12
Kwansei Gakuin Educational Foundation
226
12
Tamura Corporation
365
11
Other owners 340