Patent holdings for IPC class H01L 21/205

Total number of patents in this class: 3969

10-year publication summary

210
195
171
141
155
112
110
130
111
58
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Principal owners for this class

Owner
All patents
This class
Applied Materials, Inc.
18621
552
Tokyo Electron Limited
12712
353
Sumitomo Electric Industries, Ltd.
15483
189
Shin-Etsu Handotai Co., Ltd.
1284
141
Sharp Kabushiki Kaisha
18744
101
Sumitomo Chemical Company, Limited
9046
78
Sumco Corporation
1115
76
NGK Insulators, Ltd.
4955
59
Showa Denko K.K.
2230
58
Kokusai Electric Corporation
2018
58
Lam Research Corporation
5239
55
Kyocera Corporation
13799
48
Panasonic Corporation
20110
45
Eugene Technology Co., Ltd.
173
45
Hitachi Kokusai Electric Inc.
879
44
Mitsubishi Electric Corporation
46093
44
ULVAC, Inc.
1380
43
Mitsubishi Chemical Corporation
4507
35
National Institute of Advanced Industrial Science and Technology
3803
30
Dowa Electronics Materials Co., Ltd.
633
30
Other owners 1885