Patent holdings for IPC class C30B 25/20

Total number of patents in this class: 799

10-year publication summary

76
61
39
64
47
53
53
56
62
38
2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

Principal owners for this class

Owner
All patents
This class
Sumitomo Electric Industries, Ltd.
16305
91
Mitsubishi Chemical Corporation
4721
49
Element Six Technologies Limited
207
43
Resonac Corporation
3516
38
Sumco Corporation
1108
33
Sumitomo Chemical Company, Limited
8996
26
Denso Corporation
25513
16
National Institute of Advanced Industrial Science and Technology
3790
16
Shin-Etsu Handotai Co., Ltd.
1306
16
Tokuyama Corporation
1474
16
NGK Insulators, Ltd.
5232
15
Siltronic AG
433
15
Mitsubishi Electric Corporation
47971
14
Shin-Etsu Chemical Co., Ltd.
6083
14
Fuji Electric Co., Ltd.
5469
14
Showa Denko K.K.
2072
13
Globalwafers Co., Ltd.
730
12
Kwansei Gakuin Educational Foundation
225
12
Tamura Corporation
357
11
Sumitomo Electric Hardmetal Corp.
1101
10
Other owners 325