Patent holdings for IPC class C30B 25/20

Total number of patents in this class: 773

10-year publication summary

75
61
38
63
47
53
53
53
62
13
2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

Principal owners for this class

Owner
All patents
This class
Sumitomo Electric Industries, Ltd.
15967
95
Mitsubishi Chemical Corporation
4666
48
Element Six Technologies Limited
203
42
Resonac Corporation
3103
34
Sumco Corporation
1112
31
Sumitomo Chemical Company, Limited
9053
22
National Institute of Advanced Industrial Science and Technology
3795
17
Tokuyama Corporation
1446
16
NGK Insulators, Ltd.
5205
15
Shin-Etsu Handotai Co., Ltd.
1290
15
Siltronic AG
427
15
Mitsubishi Electric Corporation
47352
14
Shin-Etsu Chemical Co., Ltd.
5861
14
Fuji Electric Co., Ltd.
5318
14
Denso Corporation
24983
13
Showa Denko K.K.
2130
13
Globalwafers Co., Ltd.
714
12
Kwansei Gakuin Educational Foundation
218
12
Tamura Corporation
354
11
Sumitomo Electric Hardmetal Corp.
1060
10
Other owners 310