Patent holdings for IPC class H01F 1/22

Total number of patents in this class: 204

10-year publication summary

14
19
9
17
21
18
7
10
7
4
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Principal owners for this class

Owner
All patents
This class
Hitachi Metals, Ltd.
1990
16
Murata Manufacturing Co., Ltd.
24342
15
Sumitomo Electric Industries, Ltd.
15344
9
TDK Corporation
6674
8
Cyntec Co., Ltd.
253
7
National Institute of Advanced Industrial Science and Technology
3784
7
JFE Steel Corporation
6767
7
AIDA Engineering, Ltd.
133
6
Denso Corporation
24120
5
Alps Electric Co., Ltd.
815
4
Sumitomo Electric Sintered Alloy, Ltd.
227
4
Tohoku Magnet Institute Co., Ltd.
24
4
Delta Electronics (Japan), Inc.
35
4
Hitachi, Ltd.
15434
3
Panasonic Intellectual Property Management Co., Ltd.
30967
3
Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
2872
3
Taiyo Yuden Co., Ltd.
1918
3
TOKIN Corporation
207
3
Resonac Corporation
2680
3
Siemens AG
24561
2
Other owners 88